Formulation The weight and/or volume of the individual ingredients must be carefully determined before they are mixed. To obtain a well-balanced mix it is es- sential to calculate the percentage of milk solids-non-fat(MSN) to be used. This is done by subtracting the percentage of fats, sugar, emulsifiers and stabilisers(EAS) you wish to use from 100 and multiplying the remainder by 0.15. For example, to produce ice cream with 10% wt. fat, 15% wt.of sugar and 0.5% wt of Els, the following calculation will give the required MSNF in percent by weight: