Cut sweet potatoes into cubesPeel garlic and ginger chop into small piecesDice onionMelt butter in a large saucepan, saute (cook on a lower heat) garlic, ginger and onion until soft (take care not to burn) only takes around a minute.Add curry powder and stir to combine, cook until fragrant.Add sweet potatoes, water, and stock bring to the boil once boiling turn heat down to a simmer and cook until tender (usually 20 mins)When potatoes are cooked use a stick mixer or put into a blender to puree, add nutmeg, black pepper and a good grinding of salt and coconut cream to soup heat until hot don’t boil.Serve with a good squeeze of lime juice (you won’t want to miss this step!)