A good pot of caldo de res starts with beef cuts that can handle a long simmer, plus enough time for the broth to turn rich before the vegetables go in.
If you rush the broth or use very thin beef meant for tacos, the soup will never taste as full and comforting as it should.
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Ask for soup cuts with bone if possible, because bone and connective tissue give the broth more body. Shank-style pieces, cross-cut marrow bones, and stew-friendly beef are better choices than thin grilling meat.
Start the beef in cold water, bring it up gently, skim the foam, and then simmer steadily instead of boiling hard. A long, calm simmer gives you clearer broth and more tender meat.
Potatoes, carrots, corn, chayote, cabbage, and zucchini all cook at different speeds. Add the longest-cooking vegetables first, then the more delicate ones later so everything reaches the bowl in good shape.
FAQ
Yes, but the broth is usually better with at least some bone-in pieces.
Usually long enough for the beef to become tender and the broth to deepen, often well over an hour depending on the cut.
After the broth has developed, adding the firm vegetables first and the delicate ones later.