For the Roesterkoek, put flour, baking soda and salt in a bowl and mix. Now add the butter cubes to the flour mixture and mix with the sour cream to a medium firm dough.
Roll out the dough to a thickness of about 1 cm and divide it into pieces large enough to form hamburger-sized rolls of dough. Attention, the
Dough rises easily during baking. Bake on the grill at low heat
For the sauce, mix cheese and butter in a bowl (preferably with an electric mixer) until smooth and creamy. Then stir the wine and herbs into the mixture and fold in the crème fraîche.
Season to taste.
Sear the ostrich filet over a hot flame and season lightly. Cut the baked Roosterkoek open, cover with an ostrich filet and layer with the remaining ingredients to form a burger (start with the ostrich filet, then the onions and tomatoes). Finally, carefully pour the blue sauce over it.
Garnish with arugula.
Recipe: Cape Wine Braai Masters - grilling like South Africa's winemakers.