Where can I get some good stocks?
Like Veal or a Seafood stock?
Savenors on Beacon Hill and in Cambridge usually has several kinds of stocks, including a really nice demi-glace. I'd just call and ask first. In any case, they can get you whatever you want.
I haven't tried them but I believe that South End Formaggio might have what you are looking for.
I buy a very good frozen fish stock at Whole Foods.
I don't have any on hand at the moment to give you the brand. It is in the regular frozen food case, not the seafood one. The company makes fish, chicken and beef and it comes in little plastic containers the size of crab meat containers at the seafood counter.
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The Fishmonger on Huron Ave was always a good source for pre-made fish stock, but I haven't checked it out for years. I think Huron supermarket used to carry other stocks frozen, but would call them. And Penzey's has some bases which are reasonable (a small step up from the Major/Knorr offered as restaurant supply). Lastly if you do have access to Sysco, they carry some better quality (not their house brand, look for demi-glace gold) glaces.