Put the rice cakes in a large bowl and pour the lukewarm water over them. The rice waffles soak up immediately and can be mashed with your hands and kneaded into a mushy mixture.

Finely dice the onion and add to the mixture. Mix the tomato puree and spices into the mixture and mix everything with your hands. Now just let it sit, preferably overnight in the fridge.

Optional: The Mett can be served as a bread topping with vegan butter underneath and wafer-thin onion slices and pickles on top. For the Mett hedgehog you press the mass into a bowl, put it on a plate and use your hands to form a hedgehog, which is pricked with onions or pretzel sticks. Black olives can be used as eyes and nose.