Like a Belgian Pale Ale, the strong versions will also be pale to golden in color. What sets them apart is a much higher alcohol content that can range from hidden to spicy to devastatingly present. Expect a complex and powerful ale, yet delicate with rounded flavors and big, billowy, rocky, white head. Hop and malt character can vary, most are fruity and quite hoppy, but hop flavor and aroma will generally be within the low range and artfully balanced.
Duvel is the quintessential example of this style, and many others have tried to imitate it with similar references to the devil.
Average alcohol by volume (abv) range: 7.0-12.0% --BeerAdvocate