Fermenting whole bulbs of garlic at high temperature results in glossy, black cloves. The taste is sweet and syrupy with hints of balsamic vinegar or even tamarind. says Wikipedia. Empire Mayonnaise Co. says It's the Dark Knight to standard garlic's mild-mannered Bruce Wayne. A bit of black bean is put in there for extra tang! Use it wherever you would like rich, garlicky goodness. This is the sandwich master.