I transcribed the recipe; still looking for other variants.
Preheat oven to 170 C
Add 150 ml of boiling water to 50 g cocoa powder and stir
In a separate bowl, mix
3 eggs
150 ml olive oil
1/2 tsp Stevia (or to taste)
vanilla extract (no measure given)
stir in the cocoa mixture from above
Mix, then add:
150 g almond flour
1/2 tsp baking soda
pinch of salt.
Keep mixing until smooth.
Pour into greased and lined baking tin.
Cook for 30 minutes (but check after 25 minutes to avoid drying out). A cocktail stick should come out ALMOST clean.
Top with heavy whipping cream, sprinkle with cocoa powder.
Possibly add some berries for garnish.
I am considering using the chocolate truffle mix as a glaze; we shall see.
Edit:
I'm getting closer to making this, having bought a mixing bowl.
One thing - the recipe says "baking soda" but bicarbonate of soda needs something acid to help make the bubbles so this probably needs "baking powder" which includes cream of tartar to react with the bicarb to release bubbles of C02. This is what I plan to use, anyway.