Invest in a good olive oil

This is my recommendation. I bought a tiny bottle of a really good one, mostly because the store was allowing taste-tests of a couple of different types. I fell in love with this one - it has a spicy flavor to it, all by itself. I plan to use it for salad dressings (just with a good vinegar and salt), or even just plain on steamed veggies.

See if you can find a place that will allow taste-tests, and even if you can only afford a teeny bottle, get one that you adore.

Because we should all adore the food that we use to nourish ourselves.