Hashes in the east bay
I've never heard of a place with that many types of hash, but you might be thinking of Rick & Ann's. It has two hashes on the regular breakfast menu -- one is a fabulous red flannel hash, the other is based on yukon golds. There is sometimes (maybe even usually) another on the specials list.
Divine potato-cheese pancakes as well (heart attack time).
It's one of my favorite places, but expect a long wait (there's a Peet's next door for your coffee fix).
2922 Domingo in Berkeley, across Domingo from the Claremont Hotel.