Fruits

Watermelon in gelato

Watermelon (Citrullus lanatus) is a high-water, low-solids fruit used as the flavor base of watermelon sorbet. At roughly 91% water and only ~6% sugar, it brings intense fresh flavor but very little structure to a gelato mix.

Balancing parameters

Per 100 g of product, verified against independent food-science sources (listed below).

ParameterValue
Total Solids8.6%
Water91.4%
Sugars6.2%
Fat0%
MSNF0%
Protein0.6%
POD (sweetening power)8.1
PAC (anti-freezing power)10.7

Typical use: 40-55% as fresh puree or strained juice in a watermelon sorbet base

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How to use it in gelato

Watermelon is used almost exclusively in sorbet, where fresh puree or strained juice typically makes up the bulk of the recipe. Because its sugars are dominated by fructose and glucose (monosaccharides), it carries an unusually high anti-freezing power for its sugar level: a PAC factor near 1.7 per gram of sugar versus 1.0 for sucrose. This makes a pure watermelon sorbet prone to a soft, fast-melting body, so balance by keeping added sugar mostly sucrose plus a little dextrose, and lean on a stabilizer and dry solids (a touch of dextrose or maltodextrin) to lift the low total solids (~8.6%) toward the 30-34% a scoopable sorbet needs. Its high POD means the fruit already tastes sweet, so total added sugar can be moderated. Cook or reduce lightly only if you want to concentrate solids, as watermelon flavor is heat-sensitive.

Origin & background

Watermelon is native to northeastern Africa and was cultivated in the Nile Valley over 4,000 years ago; seeds and paintings of the fruit have been recovered from ancient Egyptian tombs, including that of Tutankhamun. Modern sweet red-fleshed cultivars are the result of centuries of selection for sugar and lycopene content.

Frequently asked questions

Sources

More fruits ingredients

Substitutes for Watermelon