Depending on how often you want to blog, allot certain days in which you blog. On those days, go to a fancier restaurant and order a glass of wine, choosing a different one each time. Make sure to take notes of your thoughts of the wine while drinking it to include in your blog. Before you sit down to write your blog, do some research on the particular wine you had tasted that day. Some ideas would be:
-The wines history
-How it's made
-Where it is from
-When it started being produced
-Foods that go along with the wine.
Why not include a recipe or two of meals that are made with foods that compliment the wine. This presents an opportunity to affiliate your blog with other blogs that write about recipes. It is win-win.... You would advocate their recipes and blog, while they do the same for you.