flavor...
I taste like Bread.
I am a staple in almost everyone's diet. Friends like me are a complement to any other friends I get on with almost everyone, remaining mostly in the background, but providing substance when it would otherwise be lacking.
If I wasn't bread, I'd be:
Cor blimey, I taste like Tea.
I am a subtle flavour, quiet and polite, gentle, almost ambient. My presence in crowds will often go unnoticed. Best not to spill me on your clothes though, I can leave a nasty stain.
What Flavour Are You?