With the discounting that goes on over summer, wine that won't make every guest suddenly claim pregnancy can be bought for about $11. However, a glance at the cavernous hole above the "Special - $8" sign in the supermarket wine section is evidence this guideline can and will be stretched. If buying from your local corner shop, at least a few dollars should be added to the $11 minimum.
If you must go below, there are options. With cask wine, add some class by having your wife/husband bring you the cask with both hands, pour a little into a glass, then swirl it around, hold it up to your nose, sip - and give a quick nod. Another option is to opt for red and mix it 50/50 with Coca-Cola to make Calimocho.
Hide the wine bottles and serve in tumblers tied with napkins for a classy and brandless twist. Explain by saying that you fell in love with the drink while snacking on olives stuffed with feta and watching locals tango dance at dusk in a side alley of Madrid.