A strong recipe.
Mustard
sour milk (VERY sour whey)
cucumbers
smoked meat
onions
green onions
parsley
radishes
boiled eggs
boiled potatoes
boiled sausage
Insist for a day in the refrigerator. I've been eating 1.5 kilograms a day all summer.

There are many recipes, but few strong ones.
https://ru.wikipedia.org/wiki/Окрошка