Pork spareribs are flavourful, meaty slabs of ribs that range in size from 2 to 4 lb. (900 g to 1.8 kg) per slab. Pork back ribs, also known as baby back ribs, are ribs from the pork loin section. A slab of back ribs ranges from 1-1/4 to 2-1/4 lb. (565 g to 1 kg), and tends to be leaner and less meaty than a slab of spareribs. Similar to pork spareribs, beef back ribs are much larger than pork back ribs, yet still tender and full of flavour.