Traditionally, birria is made with goat meat. However, it has become more popular to make it with beef. If you can’t find goat meat or you simply do not feel that adventurous if that is outside of your comfort level, feel free to substitute it with beef as we did. When using beef, I recommend a nice chuck roast since it is marbled well. You can also use top round or even stew meat pieces. Just use something that will tenderize nicely once cooked in a simmering liquid for an hour or more.