There are no precise definitions for these old-time cooking measurements. But generally, most sources today suggest that a dash is a scant ⅛ of a teaspoon, a pinch is about 1/16; of a teaspoon, and a smidgen is 1/32; of a teaspoon.
<em>Traditionally, a “pinch” simply meant the amount you could literally pinch between your forefinger and thumb, which usually falls somewhere between 1/16 and 1/8 of a teaspoon. A smidgen is half a pinch (1/32 of a teaspoon), and a dash is a liquid measurement that translates to to 1/8 of a teaspoon.</em>
