Begin by forming ½ lb patties of ground beef, set onto a tray and place in the fridge to firm for 30 minutes. In another bowl, add together all the ingredients for the Chipotle Lime Mayonnaise. Finally, open up each avocado and remove the seed. Scoop out the meat of the avocado and place in a bowl. Mash it together until you have an almost smooth texture. Add the rest of the ingredients for the guacamole to the bowl, mix and place in the fridge until ready to use..
Preheat your grill to high heat (around 400F) adding a cast iron skillet/plancha to the grill 2 minutes before cooking.
Add your burgers to the skillet and season the top side with salt, pepper and garlic. Cook the burgers for about 4-5 minutes per side or until they have a nice crust and are about 165F internal. Once the burgers are done, pull them off and keep them warm until ready to serve.
Add another cast iron skillet to the grill, letting the heat cool down to a medium temperature (around 325F) to start making your cheese. Add the cubed cheese to the skillet along with the hot sauce. Stir and let fully melt. Once melted, begin adding your whole milk to find your desired consistency. Add the milk slowly and then stir it in well. I prefer to add about 1-1.5 cups of milk, but you enjoy it how you like. Continually stir the cheese sauce until it is warm and ready. Pull off once done.
Right before assembling, make sure to toast your burger buns over the fire for a nice golden brown crisp.
Finally, start assembling your burger. Add the bottom of the burger bun, spoonful of guacamole, top with ½ lb burger patty, drizzle of cheese, french fries, more cheese, pico de gallo, sliced red onions and the top burger bun smothered in chipotle lime mayonnaise. Repeat this for all your burgers. Serve and enjoy!