Ice wine (or icewine; German: Eiswein) is real - it's a type of dessert wine produced from grapes that have been frozen while still on the vine. The sugars and other dissolved solids do not freeze, but the water does, allowing for a more concentrated juice to develop. It is grown/produced recently in Canada among other areas.
Aired as the third of five original films in The Hallmark Channel's 2022 "New Year New Movies" lineup.
When CJ first gets to the winery she walks out to meet Michael and walks through the snow. The snow is obviously fake.