Beverages, OVALTINE, Classic Malt powder: serving (4 tbsp or 1 envelope) to Grams
Quick answer
One serving (4 tbsp or 1 envelope) of beverages, ovaltine, classic malt powder weighs 21 grams.
1 serving (4 tbsp or 1 envelope)21 g
Reference serving (nutrition facts)100 g
Source: USDA FoodData Central - SR Legacy (2018-04) (USDA household portion weight)