Plural of borsch; multiple servings or varieties of the beet soup.
From borsch (Ukrainian soup) + -es (English plural marker). This is simply the standard English pluralization of the Yiddish-derived word.
When you see 'borsches' on a menu with multiple varieties listed, you're looking at regional variations—some cooks add potatoes, others add cabbage, reflecting how immigrant communities adapted the soup to available local ingredients.
Complete word intelligence in one call. Free tier — 50 lookups/day.