In a small bowl combine sour cream, hot sauce & lime juice. Stir until fully combined & set in the fridge to chill while you make the tacos.
In a large skillet over medium high heat, brown the ground beef in 2 teaspoons olive oil, breaking it up as it cooks. When the beef is almost cooked through, add taco seasoning & stir to combine.
Set the cooked ground beef aside in a bowl & wipe out the pan.
Return the pan to the heat & begin toasting the tortillas on the first side. The larger the pan, the more tortillas you can do at once. I can usually only fit 2 at a time. Heat the tortilla on the first side for 1-2 minutes, until it just barely begins to brown.
Flip the tortilla & cover with cheese. Top half of the tortilla with ground beef & let it cook for a minute until the cheese begins to melt.
Once the cheese has begun melting, flip the side of the tortilla with no beef, over the side with the beef. Forming a taco.
Remove the taco from the pan & continue with remaining tortillas.
Once all tacos are formed, heat remaining 1 tablespoon olive oil over medium high heat & fry the tacos on both sides, until they are crispy, about 4 minutes.
Once tacos are fried, fill them with lettuce & serve with crema.