Chocolate Tart with Marsala Sabayon and Toasted Hazelnuts recipe by Sarah Johnson

Marsala is a fortified wine from Sicily that was once popular among chefs and wine enthusiasts alike. However, excessive production cheapened its quality over time, leading to a decline in its reputation. Fortunately, a select few winemakers continue to produce marsala in its authentic form, capturing its deep and mellow character with notes of muscovado and sun-dried fruit. If you haven’t any already, now may be the time to add a bottle to your pantry. In this recipe, sweet marsala is used in a sabayon (or zabaglione in Italian). Both creamy and light, this boozy custard is traditionally served with summer fruits. But I have opted to serve it with a chocolate tart and toasted hazelnuts.

SERVES 10–12

Ingredients:
For the chocolate tart shell:
150g (5½oz) unsalted butter, softened, plus extra for greasing
90g (3¼oz) icing sugar, sifted
1 egg
½ teaspoon salt
200g (7oz) plain flour
50g (1¾oz) cocoa powder

For the chocolate filling:
530g (1lb 3oz) good-quality chocolate (70% cocoa solids), broken into pieces
3 egg yolks
200ml (7fl oz) double cream
270ml (9½fl oz) whole milk
1 teaspoon salt

For the marsala sabayon:
190ml (6½fl oz) double cream
7 egg yolks
80g (2¾oz) sugar
150ml (5oz) sweet marsala
150g (5½oz) hazelnuts, lightly toasted and coarsely chopped, to serve

For the chocolate dough, butter the bottom and sides of a 25cm (10in) fluted tart tin, and line the base with baking parchment. Place the butter and icing sugar into a mixing bowl and beat until smooth. Add the egg and salt and continue beating until the egg is absorbed.

Sift in the flour and cocoa powder and mix until everything comes together. The dough may feel dry at this stage, but the crust will have a nicer texture when the dough is cooked.

Using your hands, press the dough as evenly as possible into the prepared tart tin. Place a piece of baking parchment over the dough and use the back of a measuring cup (a small glass will also do) to gently press the dough into a smooth even layer. Press the dough up the sides of the tart tin, then trim the excess dough, reserving it for patching up any cracks that may form during baking. Place in the refrigerator until firm.

Preheat the oven to 160°C/325°F/gas mark 3.

Prick the bottom of the tart using a fork, then place it into the oven. After 7 minutes, you may notice the sides of the tart shell beginning to slouch. Gently press a flatbottomed measuring cup around the edges where the dough has shrunk and encourage it back up the side of the tart tin. Continue to bake for about 20 minutes until the tart shell is cooked all the way through. Remove from the oven and cool on a wire rack.

For the chocolate filling, prepare two large heatproof bowls – add the chocolate to one and the egg yolks to the other. Fill a saucepan with water and bring it to the boil. Remove it from the heat and place the bowl of chocolate on top, ensuring it doesn’t come into contact with the water. Allow the chocolate to melt gradually. Meanwhile, in a separate heavy-based saucepan, combine the double cream, milk and salt. Place it over medium heat. Put your bowl of egg yolks nearby, with a towel underneath to secure it.

When the milk mixture begins to simmer, take it off the heat and slowly ladle it into the yolks, stirring constantly with a whisk. Once you have incorporated all the milk into the yolks, return the mixture to the saucepan and place it over a low heat. Stir constantly until the custard thickens slightly and coats the back of a spoon.

Strain through a fine-mesh sieve into the chocolate and let it sit over the hot water for 1 minute. Remove from heat and wipe the water from underneath the bowl. Place a clean, dry spatula into the centre of the chocolate and, using small circular motions, begin to emulsify the chocolate. Once the mixture begins to look glossy, continue to bring in more chocolate and custard, all the while using small circular motions to emulsify the chocolate. Gentle stirring will prevent unwanted air bubbles. If the mixture begins to split, your chocolate may be too hot. However, a small splash of cold milk stirred into the chocolate should bring it back to its glossy texture. Scrape the sides and base of the bowl with spatula every so often. Once the chocolate is properly emulsified, pour into the prepared tart shell and shimmy the tart back and forth to evenly spread the filling. Place in a cool part of the kitchen for 2–3 hours until the filling is set.

For the marsala sabayon, take a small mixing bowl and whip the double cream until the whisk leaves tracks in the cream, stopping before soft peaks form. Chill the whipped cream in the refrigerator until needed. Prepare a large bowl with ice-cold water, filling it about one-third of the way up then set aside. Bring a pan of water to the boil and place the egg yolks into another large heatproof bowl. Sit this on top of the pan of boiling water. Whisk the yolks until they are warm to the touch, then add the sugar and whisk vigorously until the yolks turn pale and thick. Add the marsala and continue whisking until the custard is doubled in size. Notice how the sabayon changes; the bubbles will become smaller and the whisk will leave trails as the mixture thickens and becomes glossy. Remove from the heat and place over the bowl of ice-cold water. Continue whisking until completely chilled. Remove the cream from the refrigerator and whisk to soft peaks. Fold one-third of the sabayon into the cream, then fold in the rest. Store in the refrigerator for up to 4 hours until you are ready to use.

Serve slices of the tart with generous spoonfuls of chilled sabayon and a scattering of toasted hazelnuts.

Book credit: Fruitful by Sarah Johnson. Published by Kyle Books. Photography: Patricia Niven.

Cook more from this book
Lemon Drizzle Cake
North African Lamb with Plums

Read the review: click here
Buy this book:
Fruitful by Sarah Johnson
£30, Kyle Books

Fruitful by Sarah Johnson – Cookbook Review

Who is Sarah Johnson?
Sarah Johnson is an American-born pastry chef who trained under Alice Waters at Chez Panisse, before working at Skye Gyngell’s acclaimed Spring restaurant in London, and Heckfield Place in Hampshire. Johnson is known for her passion for using seasonal, sustainable ingredients, transforming them into innovative desserts and cakes that celebrate the best of what nature has to offer. Followers are treated to a collection of her stunning creations, and an inside glimpse of her farm-to-table approach to cooking, on her social media account @sarahjohnsoncooks. Fruitful is her debut cookbook.

What is Fruitful’s USP?
Described by Darina Allen as ‘a delicious celebration of ripe and seasonal produce’, Fruitful offers over 80 sweet and savoury recipes that showcase fruit in all its glory. Accompanying the recipes are a selection of pairing recommendations, flavour charts, interviews with regenerative farmers from around the world, and expert advice on mastering key techniques to help you make the most out of your produce.

What will I love?
The thought and detail that has gone into putting this book together shines through. Some books feel rather rushed, but this one is almost crafted like a work of art. The recipes are inventive and elegant, with almost all accompanied by stunning photographs which leave you hoping you have the ingredients so you can start cooking straight away.

Johnson is generous with her knowledge, sharing tips and tricks in the gentle manner of a friend leading you on a foodie journey. You can’t help but be inspired by page after page of sweet and savoury ideas that showcase the sheer versatility of fruit. Fruitful feels so much more than a cookbook, it is a joyous celebration of fruit and farming that will deepen your knowledge and broaden your culinary horizons.

Is it good bedtime reading?
Alongside the main introduction which details Johnson’s culinary journey and philosophy, each chapter and recipe also includes its own introduction. There are several pages dedicated to a detailed explanation of the various ‘Techniques for Cooking with Fruit’, breakout boxes on everything from how to curate a seasonal fruit bowl no matter what the time of year, to favourite flavour combinations. Weaved throughout the book are interviews with various producers who share fascinating insights into their work.

Will I have trouble finding the ingredients?
Not really. Johnson offers variations throughout the book so you can adjust the recipes depending on the season and/or what you already have available. For example, stracciatella features in the ‘Pizza with Peaches, Stracciatella, Rocket and Pesto’, but burrata and mozzarella are suggested alternatives. The odd recipe uses ingredients like coconut flour (‘Coconut Rum Cake with Peaches in Syrup’) and peach leaves (Vin de Pêche’), but the vast majority rely on ingredients that aren’t too tricky to source.

How easy are the recipes to follow?
There are a variety of simple and more complex recipes. Fuss-free ideas like ‘Blackcurrant Jelly’ and ‘Strawberry Sorbet’ sit alongside more involved recipes like the beautiful ‘Apple, Prune and Armagnac Tart’. All are explained in a detailed yet accessible manner, clearly outlining the steps, with photos offering additional guidance where necessary.

Stand-out recipes?
You could be forgiven for thinking that the stand-out recipes would all be sweet, but the savoury options are equally impressive. The ‘Goats Cheese Soufflés with Spring Herb Salad and Roasted Cherries’ are inspired, while the ‘North African Lamb with Plums’ is a deliciously sweet, sticky and subtly spiced slow-cooked dish that is perfect for impressing loved ones. It is tricky to select just a few ‘stand-out’ sweet options, but the indulgent ‘Little Chocolate Pots with Roasted Cherries and Kirsch Cream’, zesty ‘Lemon Curd Tart’ and sophisticated ‘Apple, Prune and Armagnac Tart’ are not to be missed.

How often will I cook from this book?
This isn’t the kind of cookbook you will make something from every day of the week, but there is much to learn from the various charts and tables which will influence your cooking. Recipes cover everything from cakes, ice cream and jam to slow-roast meats, seasonal salads and sustainable fish. There is plenty of variety too, whether you want a teatime treat (‘Polenta Olive Oil Muffins with Blackberries’), a show stopping tart (‘Chocolate Tart with Marsala Sabayon and Toasted Hazelnuts’ or a simple supper (‘Lemony Chicken Piccata’). 

Any negatives?
Whilst not prohibitively extravagant, a few of the recipes are quite expensive to make due to the need to purchase certain liqueurs. Some recipes rely on a rather large number of eggs – ‘Little Chocolate Pots with Roasted Cherries and Kirsch Cream’ uses 8 yolks and ‘Lemon Curd Tart’ calls for 8 whole eggs and 12 yolks. To her credit, Johnson acknowledges that the latter may seem excessive, but assures us they are necessary. Conscious of avoiding waste, she recommends saving the whites for her ‘Lemon Meringue Pie’ or ‘Meringues’ later in the book (as a side note, I would also heartily encourage you to try making your own ricciarelli, a deliciously soft Tuscan treat half-way between a macaron and an amaretti). 

Should I buy the book?
Yes. This is a beautiful book which will inspire you to step outside of your comfort zone and cook more confidently, creatively and sustainably with seasonal fruit.

Cuisine: Seasonal British with Italian and French influences
Suitable for: Foodies and keen cooks who want to be more adventurous, and sustainable, with their cooking
Great for fans of: Alice Walters, Darina Allen and Skye Gygnell
Cookbook review rating: Five stars

Buy this book: Fruitful: Sweet and Savoury Fruit Recipes Inspired by Farms, Orchards and Gardens
£30.00, Kyle Books

Cook the Book:
Chocolate Tart with Marsala Sabayon and Toasted Hazelnuts
Lemon Drizzle Cake
North African Lamb with Plums

This review was written by Freelance Food Writer and Recipe Developer Sophie Knox Richmond. Follow her on Instagram on @sophie_kr_food