I didn't know what these were. we just had the other night for dinner along with homemade hummus & some sujuk I purchased from the market. Sujuk
never tried it but one of my favorite meat shops Nueske's ( www.nueskes.com ) makes it, I'll have to give it a go. Head Cheese (which I just had on a banh mi sandwich from www.nhulansaigonsubs.com )
I like a good tongue sandwich from a Jewish deli or tongue tacos from tacquerias. Never had any other preparations. Back to the thread: cabeza tacos