BlackForest
Black Forest / Forêt Noire / Schwartz Wald Cake
Inspired and adapted from several recipes online, made gluten free because it is just as good and works quite well.
Jonas Zimmer - Sweety (base recipe from the French Patisserie CAP test, with gluten). link in french.
Chef Cyril San Nicolas (Crémeux Chocolat Noir for one of the filling) link in french.
Katharina McCawley (Biscuit at the base) link in english.
Richard Coppedge (Gluten Free Baking at the CIA, Genoise).
All units are in grams. Temperatures are in celsius and fareneights. Steps are listed in order. First step should be done about 24h before.
Recipe is sized for a 22 cm / 9 inch pan. Size appropriately if you are using a larger/smaller pan.
Shopping list
Approximative shopping list for a 22cm / 9in pan.
9 large eggs
600gr of heavy cream
550gr of cherries
200gr of milk
500gr of sugar
450gr of dark chocolate
60gr of cocoa
200gr of (gluten-free) flour, like King Arthur's Measure for Measure flour.
baking soda, salt.
I. Crémeux Chocolat Noir
-- day before --
Ingredients
150gr chocolate
200gr whole milk
185gr heavy cream
3 egg yolk, (60gr)
15gr sugar
Instructions
Beat egg yolk and sugar, add milk/cream nearly boiling, mix
On stove, beat until the mix starts to coagulate on the tipped pan (see video). If using a thermometer aim for just shy of 87c / 188f degrees
Wait for mixture to cool off a bit, add chocolate, mix with wand.
Let rest for 24h in fridge with cellophane directly on the creme.
II. Biscuit
Ingredient
60g (gluten-free) flour
5g cocoa powder
1/2 pinch baking powder
1/2 pinch of salt
30g sugar
1/4 scraped vanilla bean (1/2 tsp vanilla extract)
50g butter, softened
Instruction
Oven at 190c / 375f degree.
Butter 22cm /9inch pan, preferrably with based covered by parchment paper.
Mix all solids.
Add butter, make a mass, if too soft, back to fridge.
Set at bottom of well-greased 10-inch spring pan, stab with fork.
Bake for 15 min.
Remove from pan and cool off biscuit in fridge.
Optional, cover by a thin layer of melted chocolate to act as a humidity barrier. Use approx 80gr of chocolates for that.
III. Chocolate Génoise
Ingredients
6 eggs (340g)
150gr sugar
100gr gluten-free flour
50gr cocoa
Instructions
Heat oven to 160c / 325f degrees.
Butter and flour a 22cm / 9in pan.
Mix eggs and sugar, over double broiler until shy of 50c / 120c degree.
Off heat, mix with mixer high speed until 4x volume, then low speed for 10 min.
Pour sifted mixed coca/flour (in 3 batches, folding gently).
Bake 40-45 min.
Let cool over a wire rack, unmold, cool in fridge.
IV. Cherries
Ingredients
550gr fresh/frozen cherries (enough to cover a 22cm / 9inch pan)
50gr water
70gr sugar
2 tsp of lemon juice (espcially if the these are sweet cherries)
Instructions
Pit cherries.
Over moderate heat, add cherries, sugar, and water, and cook until tender while preserving their shape.
Drain cherries well, put into fridge as they must be cold during assembly.
Reserve the juice for the sirup.
V. Sirup
Ingredients
120gr cherry juice (reserved during Step II, with additional water if needed).
170gr sugar (120gr if you reuse the cherry jucie as it is already sweetened).
kirsch to taste, I use about 3 Tsp / 30gr.
Instructions
Over low heat, combine sugar and cherry juice/water until fully disolved.
Add kirsch once cooled off.
VI. Chantilly Creme
Ingredients
1 pint (470gr) of heavy cream, at fridge temperature (cold).
40gr sugar.
30gr vanilla bean (or 1tsb / 5gr vanilla extract).
Instructions
Mix ingredients and beat until firm.
Put Chantilly in the fridge.
Montage
Preparation
Cut the Genoise cake (Step 3) into 3 slices. Best is to use a long bread knife, make a mark at a bottom 3rd of the cake. Make a shallow indent all around the cake by holding the knife at a fix height and turning the cake around. Once a full turn is done, continue with knife a bit deeper into the cake. Repeat these steps for splitting the upper 2 thirds.
Montage
Place a dollop of Chantilly creme in the middle of the serving plate and add biscuit (Step 2) on it.
Place a dollop of creme on top of the biscuit and place the bottom-third of the Genoise (Step 3) on it. Use a 3rd of the sirup (Step 5) on the Genoise top, spreading the sirup evenly.
Using a pastry bag, make an even layer of Crémeux Chocolat Noir (Step 1) on top of the cake, leaving a small gap at the outer edge free of creme. If need be, smooth the top using an offset spatula.
Add the cherries (Step 4) in neat circles all around, embedding them into the creme. Reserve 6 of the prettiest to garnish the top of the cake.
Place the middle third of the Genoise (Step 4) on top of the mounted cake. Use a 3rd of the sirup (Step 5) on the Genoise top.
Make an even layer of the Chantilly on top of the cake, using no more than a 3rd of the total Chantilly.
Use the remaining of the sirup (Step 5) on the cut side of the last third of the Genoise (Step 4). Place on top of the mounted cake, uncut size up.
Cover the mounted cake top and side with the remaining Chantilly creme.
At any times during the above steps, place the mounted cake in the fridge the cake is too warm.
Final decoration
Making chocolate swirls
Temper about 200gr of chocolate, if you want the swirls to be shiny. Since it's representing wood, I think it's fine to have it dull.
Working with chocolate at approximatively 29c /85f degrees.
Place working amount of chocolate in a thin layer on a cold marble block (if unavailable, use the back of a flat baking sheet).
Once it cools off, cut chocolate in strips of 5cm /2in. Using a scraper / spatula, make round swirls. Move right away on a plate and keep it in the fridge.
Repeat above steps until you have enough swirls.
See link for visual inspiration (around minute 7 in the video).
Place chocolate swirls on top and around the cake, add possibly 6-9 small dollops of Chantilly and top with reserved cherries.