What is what's white on the outside and brown on the inside?

Here are some things that are white on the outside and brown on the inside:

• Coconut: A coconut has a hard, fibrous brown shell covered by a smooth, white husk. Inside, it contains a white fleshy part (the meat) and coconut water.

• Turnip: Some varieties of turnip have a white exterior and a brownish or yellowish-brown interior.

• Some Potatoes: While many potatoes are brown all the way through, some varieties can have a white or pale skin with a brownish interior when cooked. For example, certain types of sweet potatoes may exhibit this characteristic.

• Certain tree barks: The outer bark might be a whitish color, while the newly exposed wood underneath is brown. However, this is more about layers than a distinct "inside."