How to mix a spaghetti carbonara?
Here's how I learned from my great grandmother:


cook the bacon/salt pork/home/whatever 'til crispy
beat the eggs (she used whole eggs) with a little black pepper
drain the cooked pasta, and immediately mix the pasta with the eggs; if it's too dry, add some of the pasta water.
Add fried pork product and mix a litle more.
sprinkle cheese on top while serving.


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But I've also been known to mix everything but the pasta together (maybe not the pork if it's still too hot), and then toss it all together while the pasta's still hot, kinda like if you were tossing to mix the dressing on a salad.  (tongs work really well)

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Either way, you do end up with the fried pork bits at the bottom of the pot you were mixing in.  The easy way around this is to save 1/3 to 1/2 of it, and sprinkle it over the top when serving.