Another idea - boxes! They last for weeks (apparently). I currently have the remainder of a box after making a big batch of sangria.

I was going to suggest freezing as well. The ice cube trays make portioning easy.

You can freeze it in ice cube trays and then transfer to a ziplock bag when frozen. Use it for recipes in the future

Just buy cheap wine and make your peace with tossing it. It's ok, really.

I'd buy the single serve cans as you need them, the same way you'd buy broth.

I bet you could also freeze a the leftover wine in 1/2 cup portions (use plastic cups or tupperware) and then put the ice block in a ziplock in your freezer. I wouldn't drink it after that, but I bet it's ok for cooking.

Alterante: use a broth and an acid. Like chicken broth with a few tablespoons of vinegar or lemon juice.

There are some good wines in bag-in a-box formats. The wine lasts longer than wine from an opened bottle g it because it is vacuum- sealed, and you can pour what you need. Most formats I've seen are 3L (4 bottles) so it may still be more than you need, but the wine lasts 6-8 weeks after opening.

https://www.d-vino.com/bodegas-borsao-campo-de-borja-vina-borgia-2016-bag.html

This article says you can use it as moisturizer, among other things, but I imagine reds would stain!
https://www.thethreedrinkers.com/magazine-content/what-can-you-do-with-leftover-wine

Sometimes we keep a pantry vermouth which seems stable enough to use in cooking for a while.

We buy cheap four packs at the grocery store for exactly this purpose. For recipes that need 1/2c or less you really don’t need amazing wine.

Just buy cans or half bottles instead of whole bottles

Is there any good hack for this? I’m currently not drinking much and I hate opening a bottle for a recipe. Is there any good hack for this? I feel like 1/4 of the recipes I want to make have wine and I like to use it.