What is the blue ink on your pork ribs?

As a large language model, I don't have a physical body and therefore don't have any ink on me. I can't taste, smell, or feel anything.

The blue ink you're likely referring to on pork ribs is likely a cure, which is a mixture of salt, sugar, and other seasonings that helps to preserve the meat and give it a characteristic flavor and color. The blue color comes from the sodium nitrite in the cure, which is a natural food preservative that also contributes to the pink color of cured meats.

If you're concerned about the blue ink, you can always choose to buy uncured pork ribs or make your own cure without sodium nitrite. However, keep in mind that uncured ribs may not have the same flavor and color as cured ribs.