Why are artificial frozen grapes not suitable for ice wine brewing?
As explicitly provided in Canadian ice wine laws, ice wine must be
produced by natural method instead of artificial freezing. Ice wine is made
with natural frozen ice grapes by low-temperature squeezing and fermentation. Frozen
grapes, under natural climate conditions, are low in water content and rich in
sugar after air seasoning in autumn. Grape juice reaches 35Brix of sugar degree
after juicing (i.e. Brix is