Unfortunately my mother did not bake. It’s not some thing Japanese women.
My American grandmother did a lot of baking, but licking the beaters was not something she allowed. Not hygienic she said.
My niece loves to bake with me. M y Japanese sister-in-law was surprised that I would not allow my niece to lick the beaters. I explained the risk of salmonella from the raw egg and E. coli and parasites from uncooked flour.
In Japan the chickens are all vaccinated and tested for salmonella. Not so in the United States. Raw flour is never safe to eat. The wheat has been in the fields and stored in the silos where it’s exposed to rodents, insects, and possibly bacteria and mold spores.