Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make chorizo bilbao [title] Prepare the meat. [step] You should have 500 g of lean beef , 300 g of lean pork, and 200 g of pork back fat. Grind the lean meat coarsely and cube the pork back fat.

Ending1: [title] Mix the meat with the first four curing ingredients. [step] The first four ingredients are 1 tbsp. Ending2: [substeps] Make sure you ground your pork as thoroughly as possible to keep it from getting too tough. Make sure you use fresh ground beef instead of unground pork, as fresh ground beef does not taste good when raw. Ending3: Place these in a saucepan and preheat it. Pour 2 tablespoons (15 ml) of cumin and 3/4 cup (56 g) of salt in the pan and heat the mixture over medium-high heat. Ending4: [substeps] You could substitute bulgar meat instead of lean pork if you prefer. [title] Wash and chop the chorizo.

Answer format: ending1/ending2/ending3/ending4