Tick I’ve made this recipe in the Kitchen-Tested box on a recipe (with the date), or use the bulk action on the Recipes list.
Tested recipes get a rubber-stamp “Kitchen Tested” with the month on the recipe card and on its pin image. The Recipes list has a Tested column and a Kitchen-Tested view.
A collection can include kitchen-tested recipes automatically, so a “Tested” collection grows as you cook.