Questions & Answers about Ich esse zu viel Brot.
In German, you normally leave out the article with uncountable / mass nouns when you speak about them in general or about an indefinite amount.
- Ich esse Brot. – I eat bread (bread in general, some bread).
- Ich esse das Brot. – I eat the bread (a specific piece/loaf you both know about).
In Ich esse zu viel Brot, you are talking about an unspecified quantity of bread, not one particular loaf, so there is no article.
German distinguishes between:
viel for uncountable / mass nouns (things you don’t normally count: water, bread, money):
- viel Brot – much / a lot of bread
- viel Wasser – much water
viele for countable plural nouns (things you can count: apples, people, books):
- viele Äpfel – many apples
- viele Leute – many people
Since Brot is treated as a mass noun here, you use viel, not viele.