question: What is a good beer pairing for Roast beef and horseradish sandwich?
answer: A great choice for Roast beef and horseradish sandwich is Hopped-Up Brown Ale - Prototype Challenge (Malt Hop Balance.). Here's the recipe:
  A Malt Hop Balance. with 6.3% ABV. Uses 6 malts and 6 hop varieties. Brewing tip: High carbonate water will really accent the malt notes to better balance the punchy hops.