How do I safely bleach the crazing on this antique?

This 115 year old notable piece of China is crazed or alligatored totally, inside and out. I’ve has 3% hydrogen peroxide sitting in the bottom for 24 hours and it’s not done a thing. Im not going to put chlorine bleach in there, as someone might put food in it someday later. Chlorine bleach will stay in the fine cracks.

Peroxide is still sitting in it.

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