Processes for the preparation of concentrated milk products

A process for preparing a concentrated milk product comprising the steps of (i) ultrafiltering or microfiltering a skimmed milk to obtain a retentate having a skimmed milk/retentate volume ratio of from 3-6 and (ii) mixing lactose with the retentate obtained so that upon per, forming steps (i) and (ii), a lactose-enriched-retentate concentrated milk product comprising non-fat dry matter solids in an amount of from 20% to 30% by weight is obtained which has by weight, based upon a weight of the non-fat solids, from 33% to 36% protein, from 48% to 58% lactose and from 3% to 5% minerals, and wherein a calcium content is from 75% to 100% of that of the skimmed milk, a phosphorous content is from 50% to 75% of that of the skimmed milk, a sodium content is from 5% to 20% of that of the skimmed milk, a potassium content is from 5% to 20% of that of the skimmed milk, and a citrate content is from 10% to 30% of that of the skimmed milk.