A flat white and a cappuccino are both espresso-based drinks that contain milk, but they differ in their preparation, texture, and taste. Here are the main differences between the two:

Flat White:

• Made with a double shot of espresso and steamed milk.
• Contains a thin layer of milk foam on top, but most of the steamed milk is within the drink.
• Has a milk-to-espresso ratio of 2:3, which means it has more milk and coffee compared to a cappuccino.
• Tends to taste smoother and creamier due to the amount of steamed milk, and it contains a higher amount of caffeine since it has two shots of espresso.
• The milk foam is usually velvety with few bubbles, making it great for latte art.

Cappuccino:

• Made with a single shot of espresso, steamed milk, and milk foam.
• Contains equal parts of espresso, steamed milk, and milk foam.
• Has a coffee-to-milk ratio of 1:2, which means it has less milk and coffee compared to a flat white.
• Tends to taste stronger and more distinct due to the addition of milk foam, which absorbs some of the flavors.
• The milk foam can be dry or velvety, and its usually thicker and fluffier than the foam in a flat white.

In summary, if you prefer a smoother and creamier drink, a flat white is a good choice. If you prefer a stronger and more textured drink, a cappuccino is a good choice.