Process of making JWA
(complete in 4 days, without heating)
Photo/preparation: Hyunho Cha
1
. Do a JWA water test to make sure the water is soft
water. Small bottle holds JWA sample.
5
.Put in 3.2 kg (7.05 lb) of caustic potash.
2
.
Put in JWA in 0.5 L (16.9 fl oz) of water; see the
changes. Water on right is suitable for making JWA
.
6
.Close lid, roll on the side to melt the caustic potash.
Be careful of small amount of gas produced.
3
. Prepare clean heat-resistant plastic container of at
least 110 L (29 gal). Do not use smaller ones
7
.Heat is produced when caustic potash meets water.
Make sure it has melted completely.
4
.
Measure precisely 2.5 L (84.54 fl oz) of water and pour in
the container. If you make mistake in exact measurement,
you can fail.
8
.Carefully open canola oil can.
ULC영어본문.qxp_레이아웃 1 2016. 2. 19. 오후 6:44 페이지 261
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