Molson Coors is boosting its seltzer portfolio with an investment of £5M in hard seltzer brand, ‘Three Fold’ along with the launching of ‘Proof Point Spirited Seltzer’ at the end of May. In the case of ‘Proof Point’, an alcoholic sparking water with 5% abv, is available in 27 US states, comprising four tastes: vodka seltzer with lime; whiskey seltzer with blackberry lemon; rum seltzer with mango and pineapple; and tequila seltzer with grapefruit.