Seasonal cooking !
I have always slow cooked, using our local farmer’s markets for in season foods to cook for now and freeze for later. We joined a CSA three years ago and now I process our share for the two days after we receive it; enjoying fresh produce when it is in season and freezing the extra to use for the rest of the year. I use the Farmer’s market all year to fill in what I can with fresh local food and only supplement what’s in the freezer occasionally with things that aren’t grown here. The cost of the CSA is substantially lower than what I would pay for “fresh” in the grocery store or even the farmer’s market and I always know how and where most of my food is grown.