Tolman-Oppenheimer-Volkoff limit is around 2-3 solar masses, which means if you had that amount of cold matter and collapsed it, it would form a black hole. Problem is that once you start compressing it, it gets hotter and starts forming all sort of repulsing forces. Then again, it is generally accepted that stars bigger than 20 solar masses collapse into a black hole at the end of their life cycle. We will go with 20 solar masses so we don’t have to fiddle with cold tacos.

Quick Googling said that tacos weight on average 100 to 230 grams. We will go average of average approach so 170 grams.

Plugging the numbers in:

20 Solar masses / 170 grams = 2.339x10^32^ tacos