Roast the oat flakes in a pan while stirring until golden brown. Add the sugar and let it caramelize slightly. Then let the mixture cool on a plate.
Now peel two blood oranges, remove the white outer skin and dice the pulp. It is best to keep 4 - 8 fillets as decoration.
Whip the cream until stiff, then stir in the quark, honey, blood orange cubes and the juice of a squeezed blood orange.
Serving tip: Layer the cream in 5 layers (approx. 1 - 2 cm high) in a nice wine glass. Start with the blood orange quark, then crunchy flakes, quark, flakes, etc. Sprinkle plenty of chopped pistachios on the last layer and garnish with 2 of the remaining fillets.