Questions & Answers about С маслом хлеб становится вкуснее.
What case is маслом, and why is it used here?
маслом is the instrumental case of масло. After the preposition с meaning “with” (in the sense of accompaniment), Russian uses the instrumental to show what the subject is combined with.
Why is the preposition с used here, and can it change form?
с means “with.” It requires the instrumental case. Before certain consonant clusters (like с+с, с+м), it becomes со for easier pronunciation, e.g. со сливочным маслом, but the meaning stays the same.
Why is вкуснее used instead of вкусный?
вкуснее is the comparative form of вкусный (“tasty”). With становиться (“to become”), you need a comparative to express “become more tasty”: становиться вкуснее.
Why doesn’t вкуснее agree with хлеб in gender or number?
Comparative adjectives like вкуснее are invariable forms. They don’t change endings for gender, number, or case. Only positive adjectives (like вкусный, вкусная, вкусное) decline to match their nouns.