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"uncoted brown butter paper." However, the term "uncoted" isn't commonly used in relation to paper. It's possible you meant "uncoated" brown butter paper, a type of paper often used in food packaging, particularly for items such as baked goods, or in certain culinary contexts.

Uncoated paper refers to paper that hasn't been treated with a coating that could make it glossy or shiny. This type of paper tends to have a natural, matte appearance and is often preferred for its porous texture, which is ideal for letting food "breathe."

As for "brown butter," this usually refers to a cooking process where butter is heated until it browns, giving it a nutty flavor. The "brown butter paper" you mentioned may then refer to a paper used in a culinary setting to wrap or contain items related to the cooking or preparation of brown butter.