What is a tourne knife used for?
Also known as a "bird's beak", it's used for tournéeing root vegetables (turning them into little footballs) and making fancy, delicate cuts when carving garnishes from fruit or vegetables. More practically, the curved blade is great for peeling round vegetables and fruit. It's a complete pain in the butt to sharpen without a belt grinder (or pro sharpening service with same), but gosh, it looks neat. Congrats on the fun present!