How much is a pinch in cooking terms?
What is a pinch of something? What is the difference between a pinch and small pinch of something? How much is a Dash?

A Pinch:
To add a pinch of something as a cooking ingredient. Use your thumb, index finger and middle finger to grab the spice.

Small Pinch:
To add a small pinch. Use your thumb and index finger only to grab some spice, then add it.

A Dash:
Is at least 1/16 but less than 1/8 teaspoon

Heaping Teaspoon:
Some recipes call for heaping spoon measures. Such a heaping/heaped teaspoon, refers to an inexact volume of the required ingredient, obtained by scooping it up with a teaspoon and not leveling it off. 

Tad - 2 shakes of a spice shaker
Dash - 4 shakes of a spice shaker

Now You Know

Spices and Use In Alphabetical Order