Orlah 3:4

If a dish was cooked using shells of orlah produce as fuel, it must be burned. If this dish was mixed up with other dishes, it is nullified in the ratio of 1-in-200.

Orlah 3:5

If bread was baked in an oven that was heated using shells of orlah produce as fuel, it must be burned. If this loaf got mixed up with other loaves, it is nullified in the ratio of 1-in-200.