In perhaps my most persnickety tip yet, did you know that when a recipe calls for a drop, pinch or dash of an ingredient, this can be translated into an actual measurement? 60 drops yields one teaspoon, 1 dash is equal to 1/16 of a teaspoon and 1 pinch is 1/8 of a teaspoon. Now, try to get your head around the fact that someone, somewhere actually took the time to measure these things out.
Have a lot of egg whites or yolks leftover from a recipe but don’t know how many? A good approximation to keep in mind is that 1 large egg yields about 1 tablespoon of yolk plus 2 tablespoons of white. This has come particularly in handy when I have halved a recipe that called for an odd number of eggs — I simply beat one egg and measured out 1.5 tablespoons.