Rinse beef shanks under cold water.
Fill stockpot half way with water. Once water begins to boil, drop all beef shanks and 3 garlic cloves in stockpot.
After 1 hour scoop out garlic cloves. Everything boils for 2 hours total.
In a separate pot boil peppers for 30 minutes.
Blend peppers with 1 garlic clove, pinch of cumin, bay leaf, 5 oz broth from stockpot.
While the beef cooks, spoon out as much brown foam off the top as possible and throw away.
Once beef is cooked through add carrots, cilantro, chayote and cabbage.
Thirty minutes before turning off heat, add potatoes and green squash.
Strain blender contents into stockpot, stir to mix well. Discard strainer contents.
Serve, add a little bit of lime juice to serving.
Enjoy!