Wyeast 4632 inverts the priority every high-attenuation strain on this list is built around: where EC-1118, K1V-1116, and D47 are all chosen specifically for finishing as dry as possible, 4632 is selected for the opposite — a genuinely capped attenuation range, 60-70%, that leaves real, natural residual sweetness behind without a mead maker needing to back-sweeten or halt fermentation artificially.
Why capped attenuation is a genuine feature, not a limitation
Stopping a naturally high-attenuating strain partway through fermentation to preserve sweetness is difficult to do reliably — cold-crashing, sulfite additions, and other stabilisation techniques all carry real risk of an incomplete stop or a restarted fermentation later, sometimes in the bottle. A strain that simply can't attenuate past a certain point on its own sidesteps that whole problem, reaching a stable stopping point through its own biology rather than an intervention that has to be timed and executed correctly.
What a realistic sweet-mead batch looks like
Take a 1.100 must — a realistic starting gravity for a sweet mead built around a substantial honey addition — through 4632's 65% midpoint attenuation, and it settles near 1.035, about 8.5% ABV by the simple formula, with real, meaningful sweetness left behind at a moderate-to-strong finished alcohol level. Here the finishing gravity itself is the whole point of running the ABV and attenuation calculator, not just the accompanying ABV figure it also happens to produce alongside it once the batch is finished.
Flocculation
Medium flocculation gives 4632 reasonably ordinary clearing behaviour, though a mead this sweet may show some ongoing haze or slow clarification simply from the sugar and body remaining in solution after fermentation stops.
Nutrient needs even at capped attenuation
A capped-attenuation strain doesn't mean a fermentation that needs less care — 4632 still benefits from adequate yeast nutrient additions during active fermentation, and a poorly fed fermentation can stop even earlier than its natural range would suggest, landing sweeter than intended rather than at the specific target a mead maker planned for. Treating the attenuation cap as a ceiling to manage toward, rather than an excuse to skip nutrient additions altogether, gives more predictable, repeatable results.
Where it's used
Sweet and semi-sweet mead are 4632's defining styles — a mead maker who wants a specific, reliable, honey-forward sweetness level without gambling on a stabilisation technique working perfectly reaches for a capped-attenuation strain like this one specifically to avoid that risk. It's a poor choice for anyone chasing a genuinely dry mead, where EC-1118, K1V-1116, or D47 are all considerably better suited to the goal instead.
Predicting the final gravity target
Because 4632's attenuation ceiling is relatively predictable, a mead maker can plan a target final gravity with more confidence than they could relying on a stop-fermentation technique applied to a high-attenuation strain — worth calculating the expected range in advance using the strain's own published attenuation figures and the batch's planned original gravity, rather than discovering the actual finished sweetness level only after fermentation has already quietly run its own full, entirely natural course to completion out in the fermenter.