Fresh tomatoes peeled and blended with a little water, salt and pepper, with celery if you want it. It is savoury rather than sweet, it takes two minutes, and it is nothing like the tinned kind. Two servings.
Peeling matters more here than it looks. Tomato skin does not break down in a blender: it shreds into flecks that float and catch in the throat, and no amount of extra blending gets rid of them. Drop the tomatoes in boiling water for thirty seconds and the skins slide off. The water is there to get the blender turning, and it goes in a splash at a time. Too much and the juice is thin and tastes of nothing. This is a savoury juice, so it takes salt the way a soup does rather than sugar. Drink it cold: at room temperature blended raw tomato tastes flat and slightly metallic, and the same glass chilled for an hour tastes like a different drink.