What ingredients do you consider both versatile and indispensable?

Stuff I always, always have around:

Extra virgin olive oil (lots). Also smaller bottles of olive oil infused with chili or garlic, for when I'm lazy/tired. Garlic. Ginger. Onions. A little bottle of balsamic vinegar. Harissa paste, piri-piri spice mix, berbere spice mix -- basically an assortment of interesting spice mixes (yes, okay, I like spicy food). Coarse sea salt.

Tinned sardines in olive oil, tinned tuna, tinned beans, wholegrain pasta.

Frozen edamame (okay, it's not versatile, but a large bowl of edamame with sea salt is one of my comfort foods).