Divide the cauliflower into not too small florets, wash and cook in boiling salted water for 10 - 12 minutes until al dente. Remove with a sieve scoop, drain well and place on a plate.
Mix the oil with the lemon juice and pour over it, sprinkle with the drained capers and the coarsely chopped dill. Let it steep for at least 2 hours at room temperature, turning every now and then.
Before serving, season with salt and pepper and garnish with lemon wedges. The salad tastes best when served at room temperature.