Mulberry honey mead

A mulberry honey mead is really known as a melomel; it's a wine with a difference.

We have a glut of mulberries this year and are looking for ways to preserve the important phytonutrients in the fruit.

Mead-making is really for beekeepers who also have access to large amounts of fruit. If you are going to brew a 23 litre carboy you will need nearly 20 pounds of natural honey; in South Africa that will cost you around R1500 or more.

We get most of the honey from the gleanings after decapping; the wax is removed from the surface of the comb to allow extraction.

Mulberries in a bucket are full of purple power.

Sweetness

The sweetness of your mulberry mead will be determined by the amount of honey added and to a lesser extent by the sugars in the fruit.

Ingredients

  1. 10 kg mulberries
  2. 8kg honey
  3. Or 21 kg of wet comb and cappings mix[2]
  4. 1 large lemon
  5. 10 cloves
  6. 1 large ginger-root the size of your hand, peeled and cut into 3mm thick slices.
  7. 1tsp black tea, 2 mulberry leaves and the zest of one lemon. Boil for 5 minutes in rain water and allow to brew for a quarter of an hour. Strain before adding to the carboy.
  8. 1 tsp wine yeast added to 1 cup of warm, unchlorinated water for 20 minutes to hydrate.
  9. 1 piece of comb the size of a large coin with fresh pollen for a yeast nutrient.

Also needed are two large muslin bags that are frequently used in making a fruit-jelly and about 50 glass marbles to weight them down. I am now using smooth pebbles from a mountain stream. Carbon dioxide inside the bag lifts it to the surface and out of the liquid.

This is still not a settled issue. In time I will report on the weight of the pebbles and marbles; on this occasion it was not sufficient allowing the bags to float partially out of the liquid.

Wax in the cappings

Preferred method more recently is to place the cappings in a large bucket, add 10 litres of warm, unchlorinated water and then use a potato masher. Strain the dissolved honey into the carboy.

The wax itself plays no part in the fermentation and takes up too much space to my mind; we strain it off from the honey in the cappings.

We routinely like to add a few small chunks of honeycomb, or even old wax from the brood chamber[3], to use the all-hive method. No other yeast nutrients are then needed.

Go for it

Mulberry honey mead in carboy

I made this batch of mulberry honey mead, or melomel to be more precise, on 8th October, 2022.

  1. Sanitise and rinse all the equipment.
  2. Place wet comb and gleanings into a bucket and using 10 litres of unchlorinated water agitate with a potato masher until all is well broken up. Strain into the carboy, removing most of the wax cappings.
  3. Place the lid on the carboy and vigorously agitate the liquid for 10 minutes to oxygenate the liquid; it's heavy so we recommend two people do this.
  4. Peel the lemon, removing all the bitter pith. Cut into slices, extracting the pips. Use all the pulp and juice.
  5. Add the cloves and chopped-up ginger to the large muslin bags.
  6. Place the mulberries and lemon into the muslin bags weighted down with 30 marbles each so they will sink below the level of the liquid.
  7. Boil 1tsp black tea, 2 mulberry leaves and zest of one lemon for 5 minutes in rain water; allow to brew for a quarter of an hour. Strain before adding to the carboy.
  8. Ensure there is at least a 10cm space between the top of the liquid and the lid; it will start foaming once fermentation starts. Watch carefully that it does not overflow in warm weather.
  9. Measure the acidity and SG; and taste.
  10. Add 1 tsp white-wine yeast for every 5 litres of must is the recommendation[4]; stir into warm water at 35*C to hydrate and pour it in after 20 minutes; make sure there is some fresh pollen for a nutrient.
  11. Fit the seal and air-trap.
  12. Ferment for 6 days then agitate vigorously if there is any sign of fermentation slowing.

As a general rule fruit with seeds should be removed after two weeks to prevent spoilage from the oils. Mulberries are fine; you can leave them in the mead provided they are submerged for a long period.

If you use any honeycomb in the fermenter every cell must be opened first.

Overfilled mead carboy

This is what happens if the carboy is over-filled. Making sure the bags of fruit are submerged is part of the secret, and not using much comb; extract all the honey from the cappings and discard the latter for melting down.

Vigorous stirring of the liquid periodically will help with degassing.

There is merit in using a plastic bucket with a wide throat to prevent this provided you siphon off the liquid into glass at the 6 weeks stage.

6 weeks stage

  1. After 6 weeks test the pH again.
  2. If a plastic fermenter is being used, rack now into glass demijohns, still under airlock.
  3. Fill the gap above the liquid with a syrup made from a ratio of 1 litre of water to 130g fructose is the official recommendation; I'll use honey rather.
  4. Leave for 12 weeks. This secondary fermentation is when the mead will mature.

On 19.11.2022 I wracked the mulberry honey mead into three 5L demijohns with air-locks; fermentation has ceased but may start again. The pH was 3 and the SG 0,095.

1.25ml of bicarb was slowly added to each demijohn to raise the pH by 0,5.

The taste was indifferent but not unpleasant.

12 weeks stage

  1. After 12 weeks or when fermentation has finished, do SG and pH tests again. 
  2. If the specific gravity is too high, simply add boiled water.
  3. Then siphon the liquid from the fermenter into a demijohn, trying to avoid the sediment.
  4. If it is clear and tastes good, bottle; it will likely need to be racked again.

Acidity

The pH range you want is 3,5 to 4,5. Add 1.25ml of bicarb or tartaric acid per 0,5 adjustment on 5 litres in tranches; it may bubble over. You could use lemon juice if it is too high.

After mixing the powder in, recheck the pH. I usually do my adjustments before fermentation but have needed to do it again at racking sometimes.

Saligna honey tends towards being alkaline. So I usually add 5ml of Tartaric acid or lemon juice.

If your pH is 3 add 3.75ml Bicarb. If it is 5 then add 3.75 ml Tartaric acid, both in powder form. Allow as little air as possible into the mixture.

Air will start an oxidisation process which might end up as a vinegar. It will then be nice on salads but not for consuming as your evening tipple.

Temperature

Temperature is critical particularly in winter. If the ambient temperature goes well below 18oC the ferment may stick.

A box lined with polystyrene would help keep the must from getting too warm or cold.

Racking

Racking of the mulberry honey mead is done to separate the liquid from the dead yeast cells that have settled at the bottom.

The first racking is usually done after some 2 to 3 months; once the main fermentation has ceased. It will usually be quite murky with small particles in suspension. Check and adjust the pH.

The second rack is done after it clears, usually 6 to 12 months later. One could then bottle after a few weeks. Time has to pass; patience is a virtue.

A third racking may be necessary a few months later if it hasn't cleared.

Ask anyone who bakes or brews; yeast has a mind of its own. Sometimes it starts bubbling again months after it has cleared and you would have thought that all fermentation had ceased.

There is no reason not to start drinking your mulberry honey mead whilst it is still murky. It is an excellent probiotic; those yeast cells simply contribute to a diverse normal-flora in the gut.

All yeast products have a mind of their own, just talk to bakers, but these are the guidelines for when to rack your mead.

  • I usually do my first rack 6 - 12 weeks after making it.
  • I rack it a second time after it is clear, which could be 6 - 12 months later.
  • If it was very clear when I started my 2nd rack, then after a week or two would move to bottling.
  • If not clear then another rack when it is clear, followed by bottling.

Mulberry honey mead

Mulberry honey mead can only realistically be made if you have easy access to raw honey and the fruit; a wonderful aperitif.

Should you feel tempted to brew your own, this is the basic mead equipment you will need. Expect to pay a lot of money if you want to purchase mulberry honey wine; make it yourself and have a lot of fun.

This spicy peppadew mead is another great favourite.

A glass of spicy peppadew mead.
  1. What is Melomel Mead?
  2. 8kg gleanings + 3kg honey
  3. Fruit often ripens at a time when it is good to remove two old and often black outer combs from the brood chamber, replacing them with fresh wax frames placed in the centre.
  4. I now use just 1 tsp of wine yeast to the 23L carboy; it reduces the risk of rapid fermentation and spilling out.
  5. Session Meads: Making Carbonated, Lower-ABV Meads
  6. All-hive mead

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