Will Melted Butter Solidify?

When you melt butter with heat, the emulsion "breaks" and the components separate. If you have leftover melted butter from a cooking or baking project you can put it back in the fridge and it will harden, but it will also remain broken.

Does melted butter harden in fridge?

It will last as long as butter usually lasts in your fridge. Melting it will cause the solids to separate... depending upon how aggressively it was melted, it is possible that some of the water evaporated/steamed...

Will melted butter solidify at room temperature?

The longer it stays up, the longer it stays melted. Dipping cold or room-temperature foods into the butter lowers the temperature quickly, helping it re-solidify. ... These butter fats make the butter solidify faster. Removing them helps the melted butter stay liquid much longer, even at room temperature.