Equipment
* optional
Ingredients
Aromatics
- 1 brown onion, finely diced
- 2 garlic, minced
- 15 ml olive oil
Proteins and Bulk
- 250 g ground beef, raw
- 240 g red kidney beans, rinsed and drained
- 150 g sweetcorn kernels, drained if canned, thawed if frozen
Spice Blend and Liquids
- 5 g chili powder
- 5 g ground cumin
- 2 g dried oregano
- 30 g tomato paste
- 100 ml water
- kosher salt
Accompaniments
- 12 hard taco shells
- 150 g soured cream, chilled
- 100 g iceberg lettuce, finely shredded
Nutrition (per serving)
Method
Finely dice the onion and mince the garlic. Drain and rinse the kidney beans and sweetcorn.
Heat olive oil in a large frying pan over medium-high heat. Add the diced onion and ground beef. Cook, breaking up the meat with a wooden spoon, until the onions are softened and the beef is thoroughly browned with no pink remaining. Ensure the meat reaches a safe internal temperature of 74°C/165°F. Drain any excessive fat if necessary, but leave a small amount for flavor.
Reduce the heat to medium. Stir the minced garlic, chili powder, ground cumin, dried oregano, and salt into the beef mixture. Cook until the spices become highly aromatic, which tempers their raw flavor.
Add the tomato paste, water, kidney beans, and sweetcorn to the pan. Stir thoroughly to combine. Bring the mixture to a gentle bubble, then simmer uncovered until the liquid reduces into a thick, clinging sauce.
While the filling simmers, preheat the oven to 180°C/350°F. Arrange the hard taco shells on a baking sheet and heat them for 3 to 4 minutes to restore their crispness and enhance their corn flavor.
Build the tacos by spooning a generous layer of the hot beef and bean filling into the bottom of each warmed shell. Top with finely shredded iceberg lettuce and finish with a dollop of chilled soured cream.
Chef's Notes
- Stretching ground meat with legumes is a foundational culinary technique for budget-friendly cooking. The beans not only add bulk and dietary fiber but also release starches into the simmering liquid, helping to naturally thicken the sauce.
- Blooming spices in the rendered beef fat before adding water is crucial. Fat carries flavor compounds far better than water, unlocking the full depth of the cumin and chili powder.
- Topping the hot, heavily spiced filling with cold soured cream provides excellent thermal and flavor contrast, a key element in successful palate satisfaction.
- For enhanced flavor development on a budget, consider adding a splash of leftover coffee or a pinch of cocoa powder to the simmering beef to simulate the complexity of an authentic mole sauce.
Storage
Refrigerator: 3 days — Store filling separately from shells and fresh garnishes.
Freezer: 3 months — Freeze beef and bean filling only in an airtight container.
Reheating: Reheat filling on the stovetop or microwave until steaming. Gently heat shells in the oven before assembling.
