B
Blarney stone
They're not really made with a crust. Not like a faced tile. they're like a brick all the way through. If they have a face like a quarry tile or a glaze then yeah don't grind but terracotta is generally all the same the whole way like a flat brick or a porous jug ... They're also designed to be porous so they you could use them to cool the kitchen in times when we didn't have a fridge.If you grind them you will take off the crust as such and will give the a different texture and make them more porous not something i would adv is this something you have inherited ?ete
and most likely the finish has already worn off at this stage through wear and tear so grinding won't be worse. If they were perfect obviously don't grind them. But if they're already pitted grinding will make them better. They were also designed to be hand ground with sand ever year by a housewife. So they can take a grinding. And they look nice as they grind down over time by wear and scrubbing. They need to be sealed though with a breathable sealant and if you want to use beeswax you can but that needs to be removed and redone every now and then.
