I found out these are very handy to cook on, and we cooked many of our recipes on these, including ice cream. We used outdoor open fires to heat our water, and one fire for cooking the meats, and oyster soup.
We used kitchen gadgets from the 18th century, such as a grater to grate our whole nutmeg with (below)
And a hammer was used to crush up whole almonds. We get our hand choppers out at home everyday, and here I could have been using my simple hammer.