question: What is a good beer pairing for Ginger and grapefruit poundcake?
answer: A great choice for Ginger and grapefruit poundcake is Jack Hammer (Ruthless India Pale Ale. Hoppy. Bitter. Hoppy.). Here's the recipe:
  A Ruthless India Pale Ale. Hoppy. Bitter. Hoppy. with 7.2% ABV. Uses 1 malts and 9 hop varieties. Brewing tip: Be aware that this is probably the hoppiest beer you will ever make. Make sure you use fresh hops, for a massive fresh grapefruit hit. Have everything else in your store cupboard, and buy your hops last, as close to brew day as possible!