My sister-in-law gave me these a long while ago, she told me that I should just grate them over any food. Frankly, I forgot about them, in the back of my spice cabinet, for a long while, more than a year, until I made the Thai Noodles last week. A lightbulb came on in my head, and, I thought, this would go great on them! The limes, as you can see, are quite small, they are probably not made from their larger cousin standing next to them. But they certainly smell like limes, even after a year or more. I don't know where she got them, I'll have to find out.