The original instructions mention inverting the jar to seal it–this is not the best canning advice. The acid content is high and likely, this would be somewhat shelf-stable, but I don’t feel right advising you to follow through on this practice. Rather, pop it in your fridge to use within a month. You only have one jar anyway so why not? Great as a topping on sandwiches, burgers, etc. It has a strong flavor so be sure to pair something with it that mellows it out, like goat cheese.