For the tempura
Mix all the ingredients together with a hand blender and leave to stand.
For the vegetables
Cut up all the vegetables, fry them lightly in a little oil in the frying pan, remove them and leave them to cool. Heat the oil, dip the vegetables in the tempura mixture and fry them. Drain and set aside.
Assembly of the dish
Place the vegetables in tempura on one side of the plate, and on the other a little mayonnaise.
Decorate with chopped chives.