The present invention relates to a foamable composition that comprises calcium-depleted casein and whey protein that can be whipped to produce a foam having (a) good foaming properties, (b) good heat set properties, or (c) good foaming and heat set properties. The invention also relates to a method of making a foam comprising the steps of (1) providing calcium-depleted casein and whey protein, (2) mixing the foamable composition with a source of water so that the protein concentration in the foamable composition is about 1 to about 25% w/w, and (3) whipping the mixture to a foam, wherein a source of water is added to the calcium-depleted casein or the whey protein or is added to the mixture prior to, or during, being whipped.
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