Mead recipe: Acerglyn

Acerglyn (maple mead) recipe

An acerglyn is mead made with honey and maple syrup. The catch is that fermentation eats the maple and leaves surprisingly little of its flavor, so the maple you taste in a good acerglyn mostly goes in at the end.

At a glance

Style
Acerglyn
Alcohol
About 13.1% ABV
Finish
Semi-sweet
Difficulty
Beginner
Honey
Wildflower or clover
Yeast
Lalvin D47
Ready in
5 to 6 months
Batch
1 gallon, scalable

Ingredients

Quantities are for one US gallon (3.8 liters). Pick a batch size and every amount updates; one packet of yeast covers up to six gallons. Not sure how much honey your own twist needs? Use the mead calculator.

Batch size
  • 2 lb Honey, wildflower or clover
  • 1.5 cups Pure maple syrup, Grade A Dark Robust (about 1 lb, in primary)
  • 0.5 cups Pure maple syrup, for sweetening (held back until the end)
  • 0.75 gallons Spring water (to make 1 gallon of must)
  • 1 packet Lalvin D47 wine yeast (one packet covers up to 6 gallons)
  • 6 g Go-Ferm (yeast rehydration nutrient) (optional but recommended)
  • 5 g Fermaid O yeast nutrient (split into 4 doses, see steps)
  • 0.5 tsp Potassium sorbate
  • 1 Campden tablet
Est. start gravity1.100check with a hydrometer
Est. final gravity1.010after backsweetening
Alcohol13.1%ABV, approximate
Yield4750 ml bottles, after losses

This recipe ferments dry and is sweetened at the end: how to backsweeten mead has the stabilizing doses and a honey chart for any batch size.

Equipment

New to this? Our mead making kit checklist covers what each piece does and what you can skip.

Step-by-step method

  1. Mix the must

    Sanitize everything. Stir the honey and 1.5 cups of maple syrup into half a gallon of cool water until fully dissolved, then top up to 1 gallon. The gravity should read about 1.100. Use only pure maple syrup; table and pancake syrups are mostly corn syrup and may contain preservatives that stop yeast.

  2. Pitch cool

    Rehydrate the D47 with the Go-Ferm in 50 ml of 104°F (40°C) water for 15 minutes and pitch. Keep it at 60 to 65°F (16 to 18°C). D47 gives a lovely round mouthfeel when cool and hot, fusel flavors when it runs above about 68°F (20°C).

  3. Staggered nutrients

    Maple syrup adds almost no nitrogen, so feed it like a traditional: a quarter of the Fermaid O at 24, 48 and 72 hours and at the 1/3 sugar break (about 1.067). Degas gently before each addition.

  4. Rack when dry

    After 4 to 6 weeks, when the gravity has been steady near 0.998 to 1.000 for three days, rack into a clean jug and top up.

  5. Do not panic at the taste

    At this point it tastes like a dry traditional mead with a faint woody, smoky edge; most of the maple character has fermented away. That is normal and it is why you held syrup back.

  6. Age to clear

    Leave it 2 to 3 months to clear. Maple meads benefit from the time: the edges soften and the woody note integrates.

  7. Stabilize and sweeten with maple

    Add the crushed Campden tablet and sorbate and wait 48 hours. Stir in the reserved maple syrup 2 tablespoons at a time; each 2 tablespoons adds roughly 0.003. The full half cup lands near 1.010, where the maple reads clearly.

  8. Bottle and age

    Bottle and give it at least 2 months. It keeps well for several years in a cool, dark place.

Timeline

  1. Day 0Mix honey, maple and water; pitch
  2. Days 1 to 7Four nutrient additions
  3. Weeks 4 to 6Rack off the yeast
  4. Months 2 to 4Age and clear
  5. Month 4Stabilize, sweeten with maple, bottle
  6. Month 6 and onDrink; keeps for years

Why this recipe works

Maple syrup is mostly sucrose, which yeast ferment completely, and its flavor compounds are delicate. What survives fermentation is a dry, slightly woody and smoky note rather than anything that says maple. Sweetening with maple at the end brings back the flavor people expect, which is why a quarter of the syrup is held back.

Grade matters. Under the current US and Canadian grading names, Golden Delicate and Amber Rich are the light, mild syrups; Dark Robust (the old Grade B) and Very Dark Strong have the most flavor. For fermenting, darker is better because more of it survives.

The gravity math assumes honey gives 35 points per pound per gallon and 66 Brix maple syrup about 30, since syrup has more water than honey. A cup of maple weighs about 0.7 lb, so 1.5 cups adds roughly 32 points and 2 lb of honey adds 70, for about 1.100. Syrups vary, so trust your hydrometer over the arithmetic.

D47 is chosen for body: it is known for a fuller, rounder mouthfeel, which suits a mead that ends up tasting of maple and caramel. The semi-sweet finish is not optional here; maple reads as maple only with some sweetness behind it.

Variations

Troubleshooting

ProblemWhat to do
There is no maple flavorExpected before sweetening. Sweeten with the reserved maple; if it is still faint, use a darker grade next time and hold back more of it.
Fermentation never startedCheck the syrup label: pancake or table syrup often contains preservatives. With pure syrup, the usual cause is a must that was too cold or yeast pitched into water that was too hot.
It tastes hot and solvent-likeD47 fermented too warm. Time helps a great deal; give it 6 months or more before judging it.

More mead recipes to try

More specialty mead recipes: Braggot (honey and malt mead).

Or browse all our mead recipes. If this is your first batch, start with the traditional mead recipe or the step-by-step guide to making honey wine.

Frequently asked questions

What is an acerglyn?

A mead made with honey and maple syrup. The name joins acer, Latin for maple, with the ending of metheglin; it appears to be a modern coinage.

How much maple syrup do I need for an acerglyn?

About 2 cups per gallon: 1.5 cups in primary alongside 2 lb of honey, and half a cup to sweeten at the end, which is where most of the flavor comes from.

Does maple flavor survive fermentation?

Mostly not. Yeast ferment maple sugar completely and leave only a faint woody note, so good acerglyns are sweetened with maple syrup after fermentation.

Can I use pancake syrup for mead?

No. Pancake and table syrups are mostly corn syrup with flavoring, and many contain preservatives that can stop fermentation. Use pure maple syrup.

How long does acerglyn take?

About 5 to 6 months to drink. It is ready to bottle around month 4 and improves for a year or two.

How strong is an acerglyn?

This one is about 12 to 13.5% ABV, depending on how dry it ferments before you sweeten it.