What am I?

I go in dry and come out wet, the longer I'm in, the stronger I get. What am I?

People say I put doctors out of business, sometimes I am sour, sometimes I am sweet, I can be eaten and can also be drunk. What am I?

I am pronounced as one letter, written with three. I come in blue, black, brown, or grey. Reverse me and I read the same either way. What am I?

I am something all men have but all men deny. Man created me but no man can hold me. What am I?

Riddles and Answers