This glaze is TAK Fat White. It, and its variants are the only glaze I use on raku tea ware
Comments: A Kurt Wild glaze, it came from a student named Takahara. Fat white, big crackle. Give it time to cool just a second/deep reduction
frit 3134 100
tin or opax 10 If you want a clear leave this out.
Bentonite will help suspend it.
Takes copper well: blue/green to red/blood .
Variations -- Leave out tin for clear