I make these around Christmas for work every year.  Multiply the recipe by 5
and you get the quantity I cook for the gang.  I usually get it all cooked
and put it in a crock pot to keep it warm. (I have one of those oval ones
that are lower and perfect for buffet serving)  This is a very forgiving
recipe and you can add or subtract ingredients as you wish.

1lb hamburger
1/2 lb chorizo (or any spicy pork sausage if you don't like/can't get
chorizo)
1 onion
2 potatoes
6 eggs
spices of choice

Brown the hamburger and sausage together.  Remove the meat and brown the
chopped onion.  Drain the fat.  Put the potatoes in the microwave and cook
until tender.  Dice.  Scramble the eggs seperately and cook until fluffy.
Put the meat and the onions back in the pot together and stir in your
spices.  I use garlic and a combination of mexican spices that a friend put
together for me.  Stir in diced cooked potatos and eggs.  Let warm together
with the meat for a couple of hours in a crock pot to combine the flavors.
Serve with shredded cheese, pickled jalepeno slices, sour cream, warm
tortillas, green chillis and maybe diced tomatoes and onions if you like.

I have also scrambled the eggs and added them to the meat mixture along with
the raw diced potato and left on high in the crock pot overnight with the
spices.  I added more spice in the morning before serving.  I think the
flavors are richer but the eggs don't look as nice and it takes the potatoes
a long time to cook this way.

Hazel Az