Why chefs wear hat ?
The tradition followed since the 16th century in France, chefs hats are called ‘toque Blanche’
Height represents the rank of a chef in those days.
At present, it’s just a tradition and style which is followed – no ranking system with a height of hats.
Traditionally different heights in hat indicate a rank within a kitchen, and they are designed to prevent hair from falling into the food when cooking.
Chef hat is a part of uniform and measurement of safety in terms of hygiene and as per international culinary standards and also as per law. It’s compulsory to wear a chef hat inside the kitchen as per law in many countries and you will be fined by govt. officials for violating this.
Now there are many reasons to follow the tradition that started in the 16th century.
Nowadays hair nets have replaced hats. Hairnets can cover hairy areas around-ear. Practically it covers better than paper or cloth hats, also they are inexpensive and disposable – which makes it more hygienic than reusable cloth hats.