Banana-Infused Jameson 3 bananas, peeled and sliced 1 750ml bottle Jameson Irish Whiskey Place bananas and Jameson into a sealed container for three to four days. Strain out banana slices using a mesh strainer and discard. The infusion should be slightly viscous and cloudy—this gives the drink its unique texture, body and flavor. Pour infused Jameson back into container or bottle. Serve in a rocks glass with a single cube.