Is it safe to "salt bake" using ice cream rock salt?
Salt baking requires a lot of salt. I want to use ice cream rock salt for salt baking because it normally comes in bulk size. But I've been told that the rock salt used for ice cream is not fit for consumption. However, is it safe to use it to salt bake other foods? I.e. Shrimp. The salt isn't being consumed on the shrimp, so I'm curious whether this is safe or not.
Best Answer
There are some kinds of rock salt that are meant for consumption ("food-grade"), and recipes like that salt-baked shrimp intend you to use that sort. While you're not directly eating the salt, it does come into contact with the shrimp, and there's water there to spread things around, so really, you are eating a bit of it. Even if there's not a safety issue (some things could conceivably be toxic) it might well taste bad, and some of the flavor does get into your food. You wouldn't be able to count on this being reliably the same from box to box, either; if it's not food grade, there could be plenty of variety in what the extra minerals are. Sometimes it might be fine, and sometimes it might taste awful.
It can be hard to find food-grade rock salt, though, so if that's an issue, you might consider switching to other salt-crusted recipes that use kosher salt. Especially with shrimp, this should be manageable, because it'll be on the outside of the shells, so though the salt will dissolve more easily, once you peel them it shouldn't be horribly salty.
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Can I use ice cream salt instead of kosher salt?
Bottom Line. You can substitute kosher or kosher like salts for ice cream salt. Look for large grain sizes for best results. If it's a pinch, you can use table salt in a mix but it lacks the coarse texture of rock salt.Is ice cream salt same as rock salt?
A scoop of ice cream. Large salt crystals usually make up the majority of ice cream salt, which is sometimes referred to as rock salt. It can also be used to melt ice on roads and sidewalks. Although the cook may need to use more of it, table salt can sometimes be used as a substitute, if needed.Can you reuse rock salt after making ice cream?
If you make ice cream regularly, you can eliminate ice cubes and reuse salt.Why is ice cream rock salt Not for human consumption?
Ice-melting chemicals commonly contain sodium chloride or rock salt, calcium chloride, potassium chloride, magnesium chloride, and/or urea, also known as carbonyl diamide. If swallowed, they can be irritating and cause stomach distress.Steak School: How to make a Salt-Baked Tomahawk
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Answer 2
Reading through the transcript on that episode of Good Eats it seems that he intended for the recipe to be done with the ice cream type rock salt:
I also like plain old rock salt. Not only is it good for de-snowing, de-icing your, your front stoop, it's good for, of course, making ice cream, and believe it or not, for baking stuff.
That being said, I would personally feel fine using the rock salt since it doesn't come in direct contact with the edible portion of the shrimp. But if I were buying bulk salt specifically to salt bake I'd err on the side of caution and purchase pretzel salt which has very coarse grains and is safe for consumption.
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