Peel the tomatoes. It's easier if you dip them half a minute in boiling water before.
Put the peeled tomatoes and the rest of the ingredients into a blender and blend at max speed for less than a minute. The texture has to be smooth, thick enough as to qualify as a cold soup and not as a juice. Taste and correct vinegar and salt.
Enjoy extra-cold, garnished with hardboiled egg and ham shavings!
Recipe by El Cookbook at https://elcookbook.wikaina.com/salmorejo/