Oyster shell vs egg shell

[The Baker]

Depends on how many eggs you eat.

Geoff

[habaz]

if it dissolved, you wouldn't have a shell to put in your wash.

Do you mean egg shell is 100% calcium carbonate. If it is so you are right and no need to worry about it is boiled or not.

[NZChris]

I doubt any source of CC is pure CC, read the whole thread. I don't use egg shell because I have better options easily available, not because it isn't 'pure CC'.

My current sugar wash ferment has no CC in it and I won't add whole shells from my local beach, or any other form of CC, unless the pH starts dropping.

[habaz]

I doubt any source of CC is pure CC, read the whole thread. I don't use egg shell because I have better options easily available, not because it isn't 'pure CC'.

My current sugar wash ferment has no CC in it and I won't add whole shells from my local beach, or any other form of CC, unless the pH starts dropping.

Thanks @NZChris