How do you know that have beaten the eggs whites to thick peak?

To check if egg whites have been beaten to thick peaks, there are a few key indicators to look for:

1. Firm Peaks:

- Lift the whisk or beaters from the egg whites. If stiff peaks form and hold their shape without drooping or collapsing, the egg whites are at the thick peak stage.

2. Glossy Appearance:

- The egg whites should appear glossy and smooth, with no visible streaks or bubbles.

3. Stability:

- When you turn the bowl upside down, the egg whites should stay in place and not slide or move.

4. Volume:

- Beaten egg whites should have significantly increased in volume compared to their original state.

Note: Thick peaks are the stiffest stage of beaten egg whites and are often used for recipes like meringue, angel food cake, and macarons.