Every thousand batches, Bell's makes a specialty-release beer that commemorates their own continued existence. For Batch 10,000, they threw in everything but the kitchen sink, and then tossed in the sink for good measure. Over a hundred types of grains and sixty types of hops went into making this massive barleywine.
Definitely not for the faint of heart.
The list of ingredients in the brew can be found here.
Zymurgical Explorations grade: A