That Boutique-y Rye Company Millstone Batch 4 is a young rye whisky bottled at a robust 55.0% ABV. Rye whisky is typically known for a grain-forward style with peppery spice and a firmer, more vivid profile than many softer whiskies.
At 3 years old, this is likely to show an energetic, youthful character where the rye grain and higher strength play a leading role. For a novice drinker, expect a bold and spicy style that may open up well with a small splash of water.