Mother Earth 4 Seasons Summer 2021 Nitro Russian Imperial Stout Can:ASK AND YOU SHALL RECEIVE. YOU WANTED US TO CAN our Barrel-Aged RIS, and we did. This carefully concocted recipe typically serves as the blending base for 4Seasons so we figured what better vehicle? White Wheat adds body and boosts head retention, while the whirlpool addition of brown sugar gives the beer a caramel sweetness to round out the roasted barley and coffee malt. Finally, nitrogen is infused to create a velvety mouthfeel.