Back in the 1930s, when Mars first created this candy, they were known as Energy Balls.
Maltesers are honeycombed malt biscuit balls coated in milk chocolate (more biscuit than chocolate).
Ingredients: milk chocolate 75% (made of sugar, milk solids, cocoa butter, cocoa, emulsifier (soy lecithin), and flavourings); wheat glucose syrup; barley malt extract; milk solids; partially hydrogenated vegetable fat; sugar; wheat gluten; pectin; and salt.