Where do you get a flat leaf shaped mexican candy possibly called slabs?

the other day a friend gave me one and they were great! but i cant find any around i cant even find them on the computer couse i dont know the name of it can someone please help
Update: its spicy whats the name and im not going to go to mexico to get it so hive me a website or a store
Update 2: no its very flat and about 10 inches
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