In Italy each region has its own, sacred, defined volume for a glass of wine (from 80 to 100 ml). The correct one ofc is 100ml. Who would pour 450ml of wine i

In Italy each region has its own, sacred, defined volume for a glass of wine (from 80 to 100 ml). The correct one ofc is 100ml. Who would pour 450ml of wine in a single glass?! (and > 250ml before dinner will likely get you tipsy)