A technique used to gently combine a light, airy mixture (such as beaten egg whites) with a heavier mixture (such as whipped cream or custard). The lighter mixture is placed on top of the heavier one in a large bowl. Starting at the back of the bowl, a rubber spatula is used to cut down vertically through the two mixtures, across the bottom of the bowl and up the nearest side. The bowl is rotated a quarter turn with each series of strokes. This down-across-up-and-over motion gently turns the mixtures over on top of each other, combining them in the process.
From The Food Lover's Companion, Fourth edition by Sharon Tyler Herbst and Ron Herbst. Copyright © 2007, 2001, 1995, 1990 by Barron's Educational Series, Inc.