I assume you can combine heavy cream, or heavy whipping cream with some lighter dairy product to make "light cream." ;o)
AntoniaJames is a trusted source on Bread/Baking.
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hardlikearmour is a trusted home cook.
Light cream is 18-30% fat per cook's thesaurus. I think a equal mixture of heavy cream and half-and-half would work just fine as a substitute. Or 3 parts heavy cream to 1 part milk would put you somewhere between 27% and 28% fat.
Chris is a trusted source on General Cooking
There's such a huge range. I wish we'd just list the percent butterfat instead of using vague names. Since there are no standards, I'd just mix according to what feels right for you, not worrying too much about precision or accuracy.
it always helps to say what you are making because sometimes the specific dairy is more important that other times. That said, I sub light cream with half heavy cream and half whole milk.
p.s. i believe Half and Half is half light cream/half whole milk.
Not necessarily. In the US, half and half is 10.5-18 percent fat and light cream is, as HLA pointed out, 18-30 percent. So light cream and half and half could be the same product or could vary by a factor of 3. We just don't have standards.