A Peruvian cocktail containing pisco, lemon or lime juice, egg whites, simple syrup, and bitters.

A cocktail containing Bourbon whiskey, lemon juice and sugar.

(idiomatic) A negative aspect to something mostly positive.

plural of sour puss

plural of soured cream

Archaic spelling of sauerkraut.

A low spreading plant with yellow flowers and clover-like leaves, Oxalis stricta.

(cooking) Between sweet and sour taste. / Having both positive and negative traits, or inspiring conflicting good and bad feelings.

Nyssa sylvatica (black tupelo) / Nyssa aquatica (water tupelo)

natural gas, or any other gas, containing significant amounts of hydrogen sulfide