5g is one teaspoon - or 5ml for liquids. The chemist always gives one with a child's prescription medicine. You can get little egg spoons and dessertspoons and tablespoons. But a teaspoon is 5ml (5g) Soupspoon is 10g (10 ml) And a tablespoon is 15g (15ml) Get yourselves a set of measuring spoons - they go from 1.25 ml to 15ml and are very useful. Pound shop if you don't mind pink, blue or lilac