Clean the salad, wash and drain well. Wash, sort and halve blackberries. Wash the blackcurrants, shake dry and remove the berries from the panicles. Peel the cucumber, halve it lengthwise and cut into fine slices. Wash the herbs and shake dry. Pluck mint leaves and dill flags from the stalks
Mix vinegar, agave syrup and mustard. Emulsify oil in a thin stream. Season to taste with salt and pepper. Peel the pistachios. Mix salad, cucumber, herbs and berries, arrange on plates with vinaigrette and sprinkle with pistachio seeds