A person who is not a hippie, but into organic products and cares about the earth. They may wear birkenstocks with wool socks, mostly don't wear makeup, and are a genuinely laid back and cool group. You want tolerance? They won't go through the effort of causing drama - they'd rather be hiking.
A granola cruncher is a a tye-dye wearing, birkenstock wearing, tree hugging, laid back cool person.