Thai basil is a different plant than the Italian basil most American kitchens keep around. Italian basil is sweet, clove-forward, and fragile. Thai basil is peppery, slightly anise-like, sturdier, and holds up to heat. In a Thai-inspired dish like drunken fried rice, the swap isn't cosmetic. It's the difference between a dish that tastes authentic and one that tastes like Italian chef adjacent.
The basil goes in at the very last possible moment. This is a rule, not a suggestion. Basil cooked for more than a few seconds loses its aroma, goes dull green, and takes on a grassy note that has nothing to do with why you added it. Residual heat from the pan is enough to release its oils. Toss, plate, eat.
Everything else is a straight fried rice technique. Day-old cold rice is non-negotiable; fresh warm rice steams in the pan instead of frying. Vegetables go in first so they cook through and release any moisture before the beef arrives.
The beef is where the "drunken" flavor lives. Ground beef browned hard, left undisturbed until the bottom darkens and crisps, then broken into chunks and cooked another couple of minutes for more crispy edges. The beef stock, fish sauce, soy, and brown sugar combine with the rendered beef fat to create a sauce that looks thin on paper but coats every grain of rice as the pan reduces.
A fried egg on top with a soft yolk is the one upgrade that turns this from a weeknight dinner into something you'd pay for. When you break the yolk over the rice, the fat combines with the sauce and turns the whole bowl into something richer and more cohesive. Thai basil scattered over the egg, serve immediately.