Heat oil in a skillet and cook onion until translucent.

Add beef and break it up; cook until browned.

Drain excess fat if needed and return pan to heat.

Add taco seasoning and a splash of water.

Simmer until meat is evenly coated and slightly saucy.

Warm tortillas on a dry pan or flame and keep wrapped.

Prep toppings: lettuce, cheese, salsa, sour cream, lime.

Assemble tacos and finish with lime juice.