"Lukewarm temperature" means that something is moderately warm, neither hot nor cold.
Full definition
«The primary goal of the Kepler mission was to answer the question, When you look up in the night sky, what fraction of the stars that you see have Earth - size planets
at lukewarm temperatures so that water would not be frozen into ice or vaporized into steam, but remain a liquid, because liquid water is now understood to be the prerequisite for life,» Marcy said.
Only 10 of these were Earth - size, that is, one to two times the diameter of Earth and orbiting their star at a distance where they are heated to
lukewarm temperatures suitable for life.
In a small saucepan, heat milk, water and butter over low heat until butter is melted, remove from heat and allow milk to cool to
lukewarm temperature.
Remove the bowl from the water and let cool to
lukewarm temperature.
Allow mixture to cool to
lukewarm temperature, then gradually stir in confectioners» sugar until frosting has reached your desired consistency.
Just remember to keep the water at
a lukewarm temperature.
Instead, opt for
a lukewarm temperature that won't further dry out skin.