Coors Brewers is supporting its Dutch lager Grolsch aggressively this spring. The latest in its Not Ready Yet TV ads made its debut on Friday, while four new pack variants are being introduced next month (1.2ltr, 600ml, 300ml and 250ml bottles) and a £1m on-pack free glass promotion will be running in April and May. Sales director John Holberry said: "Grolsch had an outstanding performance last year with off-trade sales up 73% (ACNielsen) and we intend to maintain that." {{DRINKS }}