Cut the cauliflower and broccoli into florets and cook them al dente, under no circumstances cook them too soft (in steam about 8 minutes).
Carefully cut or slice the florets as thinly as possible and arrange alternately broccoli and cauliflower side by side on a flat plate. Drizzle 1 dash of olive oil and a squeeze of lemon over the vegetable slices, grind the salt freshly over it with the salt mill. Scatter the crushed pepper over the top.
Tastes great as a starter with delicious white bread or as an accompaniment to white noodles (e.g. butter noodles).