Japanese chef makes Tartar sauce 

Recipe
Onion 1/2
Cucumber 1/2
Egg 2
Mayonaise 300g
Lemon 1/2
Ketchup 1/2tbsp
Sake 1 tbsp
Black pepper
① Mince a half cucumber and a half onion. Soak the onion in water for about 30 minutes. Squeeze the onion with paper towel to drain water.
② Make two boiled eggs. Separate eggs into yolk and white. Mince the white.
③ Put all ingredients and seasonings in a bowl and mix them.