Microplane is the brand name for super sharp graters and zesters now on the market in Australia. There are many versions, depending on the task. Zest can be as fine as speckles, for an icing for example or ribbons of chocolate for decorating a cake. There are graters for parmesan cheese, nutmeg, chocolate…I have two; a fine zester for things like citrus fruit, parmesan and chocolate and a medium ribbon one for soft cheese, chocolate and onions. They are available from good kitchen shops.