The reason your filtered water tastes like soap can be a result of the filter being dirty, contaminated municipality water and if your town gets it's water from surface water where the bacteria lifecycle gives off a compound called geosmin which the filter cannot usually remove.
If you're on septic tank and well water it can mean that septic tank leakage has found its way into your water supply which can lead to a soapy taste in the water even when filtered.
Having a soapy taste in your mouth can be a result of changes in hormones as you age or a result of genetics.
A soapy flavor or soapy taste in your mouth can also be caused by conditions such as dry mouth, oral thrush, cavities, and even acid reflux.
Certain medications and dietary supplements can also cause a soapy taste in your mouth.
Some people taste soap in certain spices such as ginger as well as cilantro and even coriander.
The reason ginger and the other spices tastes like soap is because some people have a recessive gene that causes the ginger as well as coriander and even cilantro to taste like soap.
Not everyone who eats ginger finds that it tastes like soap.
For people without the recessive gene the ginger often normally has a spicy, peppery, and either warm or hot taste.
Some people also find ginger to have a bit of sweet taste.
Young ginger is very juicy, and has a much mellower flavor.
Ginger is a flowering plant whose rhizome, ginger root or ginger, is widely used as a spice and a folk medicine.
The ginger plant is an herbaceous perennial that grows annual pseudostems about one meter tall, bearing narrow leaf blades.
Common ginger, also called culinary ginger, is one of the most popular edible types.
Not only are the rhizomes of common ginger edible, but so are its leaves and shoots—so feel free to chop them up finely and use them as a seasoning!
The leaves and shoots, meanwhile, have a less pungent flavor than the rhizome.
Ginger can also help relieve nausea and vomiting and aid digestion.
Antioxidants and other nutrients in ginger root may help prevent or treat arthritis, inflammation, and various types of infection.
Ginger may also reduce the risk of diabetes, cancer, and other health problems.