Peel and finely grate the ginger. Mix with lime zest and 1/2 teaspoon of oil. Season with salt and pepper. Cut salmon fillet into 4 pieces, put 2 pieces of fish on each skewer and brush with the marinade.
Let it draw a bit. In the meantime wash and clean the salads and cut them into bite-sized pieces. Peel the avocado, cut it into slices and sprinkle with some lime juice. Mix the rest of the lime juice with salt, pepper and maple syrup.
Add 1/2 teaspoon of oil. Mix salads and avocado with the vinaigrette. Steam the fish skewers in a hot coated pan, covered, for 5-7 minutes. Arrange in a bowl with the salad.