A mineral-fortification system that has a bottle cap, a pouch and a pouch opener. A powder is contained within the pouch, and the powder contains at least one mineral and a redox modulating compound. When the cap is secured onto the opening of a bottle containing a liquid and when the pouch opener is activated, the powder is released from the pouch and mixes with the liquid to form a mineral fortified liquid composition that is fortified with at least one mineral and has a pH between about 2.5 and 9.5. Moreover, the mineral fortified liquid composition has a redox potential that satisfies the following equation: 0.gtoreq.RP-(A-B*pH).In this equation RP is the redox potential in millivolts of the mineral-containing liquid composition, pH is the pH of the mineral-containing liquid composition, A is 400 and B is 20. The mineral is preferably selected from calcium, iron, zinc, copper, manganese, iodine, magnesium, and mixtures of these. Moreover, the mineral-fortified liquid composition may preferably be substantially free of flavor or sweetener compounds. Even more preferably, the liquid composition has no metallic taste or after-taste, a Hunter colorimetric "b" reading of less than 5.0, and an NTU turbidity value of less than 5.0. The mineral-fortified liquid composition may optionally contain other nutrients and vitamins, for example, vitamin A, vitamin C, vitamin E, niacin, thiamin, vitamin B6, vitamin B2, vitamin B 12, folic acid, selenium, pantathonic acid, and iodine.