Mung bean sprouts can be grown indoors.
When you choose at Youtube “growing mung bean sprouts ” you’ll find many videos about this topic.
In this tip 2 methods of growing mung bean sprouts are described:
When you need only few sprouts, you can buy small amounts of mung beans in a garden shop. Price about €3.00 for 100 grams (€30.00 per kilogram).
When you want to grow many sprouts, you better buy the mung beans at specialized greengrocer’s or in a toko for a lower price, about €3.50 per kilogram. In Holland, mung beans can be bought from September to January.
B)# Storage and use
Mung beans can be stored in a glass pot with a lid on it. It is good to use an egg-cup when strewing mung beans.
C)# Growing sprouts with clinging water
This procedure has been derived from this video
- One plastic freezing box (box with no holes).
- One plastic freezing box the same size with holes.
- To make the holes in this box, acts as follows;
- Drill small holes in the bottom of this box. Diameter of each hole is about 2 millimeters (1/12 inch).
- You can also drill a big hole (diameter about 6 millimeter (1/4 inch) in each short side of the box. Use it for fast draining of water out of the box.
- One plastic lid fitting on the freezing box.
C2) Clean 2 freezing boxes and 1 lid
- Clean the 2 plastic boxes and one lid in hot dish water. Rinse them in water. Dry the boxes and the lid.
C3) Put dry mung beans in a plastic box with no holes
- Put dry mung beans in the box with no holes. Fill the box with mung beans until “one layer of” mung beans covers about 1/3 of the bottom. During absorption of water the mung beans grow to 3 x the size of dry beans. One layer of soaked beans “fills” the whole bottom of the box.
C4) Clean the mung beans in water
- Pour cold tap water in the box with no holes to clean the mung beans.
- Decant (drain off) water from the box. Keep the beans in the box.
- Repeat pouring in and draining off water for about 5 times to clean the mung beans well.
C5) Soak the mung beans in water
- Pour cold tap water in the box with mung beans. Water level about 1 to 2 centimeters (0.5 inch) above the beans.
C7) Grow mung bean sprouts.
- Execute the following actions every 8 hours:
- Remove the cap of aluminium foil from the 2 boxes on each other. Lay the cap on the table.
- Take the 2 boxes on each other to a kitchen sink.
- Take the top box (with mung beans and holes in the bottom) fom the bottom box.
- Rinse the mung beans with cold running tap water. Let the water drain through the small holes in the bottom.
- Hold the box with holes (with mung beans) horizontally for about 10 seconds. Let the mung beans drip out, so most of the water is drained off.
- Drain the water from the bottom box. Rinse the bottom box with cold running tap water. Drain the water from the bottom box.
- Put the box with holes (with beans) on (in) the box with no holes.
- Put the whole (2 boxes on each other) in a room at about 20 C (68 F).
- Cover the 2 boxes on each other with the cap of aluminium foil.
- Repeat these steps after about 8 hours.
Tiny mung beans sprouts after 2 days of growth.
- Mung beans in 2 systems; a normal leak tray (L) or a leak tray with an oblong air opening (R).
- Both systems covered with a cap made of aluminium foil.
- Sprouts grown in both systems: normal leak tray (L) or a leak tray with an oblong air opening (R).
- Mung bean sprouts grow in both systems just as good.
- So there is no need to make an extra (oblong) air opening in the long side of the leak tray.
D)# Growing sprouts in a water bath
D1) Hetty’s method:
Hetty wrote a reaction in the Dutch version of Sjefgardentips (Sjeftuintips). She uses an easier method of mung bean sprouting. She sent me 2 photos for explanation (see further in this post).
Hetty uses 2 empty “mushroom boxes”. In the bottom of one box she made 12 small holes. In this box she also made 4 holes in the sides and put 2 satay sticks through them. The other mushroom box has not been “adapted”.
Strew dry mung beans in the “not adapted” box. Add tap water. Beans are soaked in this box for 1 or 2 days. Each 12 hours, water is refreshed.
Next step is putting the soaked beans in the box with small holes in the bottom. The water in the “not adapted” box is refreshed. Then the boxes are put on (in) each other. The water level is somewhere between half way and the top of the beans in the upper box. Each 12 hours, water is refreshed.
This growing method works well. Hetty sent me these photos that I may use in my weblog. Thank you, Hetty.
Hetty’s growing set made of 2 mushroom boxes and 2 satay sticks.
D2) Hetty’s method using freezer boxes:
I tested the method of Hetty using 2 freezer boxes (instead of mushroom boxes). Below a description.
You can grow mung bean sprouts in freezier boxes that have a special form, as shown on the photos below. These boxes are sold in a shop for household goods.
These boxes have a flat bottom and a “special” sidewall. When you put one box on (in) another box, there is a room of about 0.5 inch high below the upper box. So you don’t need satay sticks as shown at the mushroom boxes.
For each growing set you need one “normal” box and one box with small holes in the bottom.
In one box there are 5 small holes, one in the center and one at each corner. How to make the holes: Hold a small block of wood at the inner side of the box and drill a small hole in the bottom starting at the outer side. You can also make these holes using a awl and a block of wood. Size of the holes is 1/12 to 1/8 inch (2 to 3 mm).
Then drill a bigger hole in one side of the box. Diameter about 1/4 to 1/3 inch. This hole is at about 0.5 inch from the bottom. Use this hole for fast draining water or when you want to remove the skins of the mung beans.
D4) Soaking in cold tap water
There has been a test with many mung beans in a box or with few beans in a box.
Left side box: many beans. Right side box: few beans. Lay the covers loose on the boxes. Put the boxes in a room at 20 to 25 C (68 to 77 F). Refresh the water each 12 hours.
After approx 2 days the beans have grown and the skins have bursted. Left “many beans”, right “few beans”.
D5) Growing mung bean sprouts
- Do these actions at “many beans” and at “few beans”.
- Pour (put) the soaked beans in a box with holes in the bottom.
- Rinse the box with no holes under cold running tap water.
- Put some cold tap water in the box with no holes.
- Put the box with beans in (on) the box with no holes. The beans are half to completely covered with water.
- Put the whole on a dark place at about 20 C (68 F).
D6) Rinsing and refreshing:
- Rinse the growing sprouts under running cold tap water.
- Refresh the water in the bottom box.
- Do these actions every 8 hours.
Above you see a photo of sprouts after 6 days of growing. Left box: “many”. Right box: “few”.
On this photo some sprouts from each group; left side “many”, right side “few”.
- Mung bean sprouts in the “many” group are smaller than in the “few” group.
- Do not put to many dry beans in a box.
- Covering about 1/3 of the bottom of a box with dry mung beans is okay.
- The method of Hetty is a good one. It is very easy to make a growing set out of 2 (freezer) boxes. Just making some holes in one box. If desired you can easily remove the bean skins.
- Pay attention to the amount of beans that you strew into the box; Maximal about 1/3 of the bottom surface covered.
D10) More sprouts
When you want to grow more sprouts, use bigger boxes. For example boxes like the ones on the photos below.
These boxes are used and described in chapter C)# Growing sprouts with clinging water.
E)# Growing sprouts in a machine (info Gerard)
Gerard, living in Brasil, made a comment on Sjeftuintips, the Dutch version of Sjefgardentips. Gerard has sent me info and photos about growing mung bean sprouts in a sprout machine.
There are 2 plateaus with beans (one on each other) in the machine. A rotating sprayer sprays warm water on the beans. (During growing there is a lid on the apparatus and a black cap over the whole).
Mung bean sprouts grown in the machine.
Working method (info Gerard)
Below a description of growing sprouts in the machine (info from Gerard)
E1) Weighing beans and sorting out
- Weighing 150 grams of mung beans.
- Sorting out and removal of bad beans.
- Good mung beans; 143 grams
- Bad beans (broken, dried out, weird colour).
E12 Washing beans
- Add (mineral) water to the mung beans in the tray.
- Put a lid on the tray. Shake the whole above the kitchen sink.
E3) Weighing water, heating water and pouring in
- Weigh 1150 grams of water in a pan.
- Heat the water in the pan to 38 C (100 F).
- Pour all water in the water tank (water reservoir).
E3) Building up and beans in the machine
- Put the green compartment on the water reservoir.
- Divide the washed mung beans over 2 plateaus.
E5) Growing sprouts and refreshing (renewing) water
- Fill a plastic can with water.
- Put the can with water in a fridge to cool down.
E7) Info about the machine
Base station with water reservoir.
Control panel; 1 on/off button and 3 buttons for 3 ambiant temperatures.
Base plate info 220 volts, 50 hertz, 20 watt.
- Pump (middle of the photo),
- Heating element (orange strip at the right side of the photo),
- Print board with components (clock, pump on/off, heating element on/off).
F)# Growing thick mung bean sprouts
The sprouts that grow using this method are thinner than the sprouts that you can buy at a greengrocer. See photos below;
“Home grown sprouts”
Both sides advice to put a weight on the sprouts during growing…..
Something like the photos below;
Needed: 3 trays (1 with bottom holes), mat, little stones.
Grow the sprouts. This can go wrong.