We make transverse incisions on tomatoes, scald with boiling water, remove the skin, grate and add to the onion (to be honest, I do not indulge with boiling water and removing the skin: we cut crosswise, cut the edges, remove the skin back and immediately grate – it turns out, we rub the pulp, and leave the skin in the left hand).
add salt and pepper, simmer for 5-7 minutes.
transfer to a saucepan.