Vitamin B2 plays an important role in transforming vitamin B9 and in converting vitamin B6 into active form. Since you can’t eat liver, eggs, and shellfish all the time, I picked a salmon dish for a change, which also contains vitamin B2. This mode of preparation comes from French cuisine and its greatest advantage is that the fish remains really light, tasty and juicy if prepared this way. 

Salt and pepper the salmon fillet. Put the lemon slices and the ginger on a piece of baking paper, put a few lumps of butter next to it (or drizzle with olive oil) and place the salmon on top. Hold the two longer sides of the paper together and fold over the fish then roll up the two ends. Bake in oven at 150 °C for 15-20 minutes. Cook the broccoli and cauliflower in boiling, salty water until soft then drain them. Add a little butter or coconut cream and blend them. Flavour with salt and pepper in the end and serve sprinkled with herbs.