If you dipped blue litmus into either, the blue paper would stay blue. A substance that tastes bitter and feels slippery is probably a base. You should never taste strong bases. It would be fatal. Bleach, ammonia and many household cleansers are all common bases.
Drain cleaner is another strong base.
When we combine an acid and a base in a neutralization reaction , the resulting products are water and a salt. Many different substances are classified as salts. Salts are formed when the positive ions of a base combine with the negative ions of an acid. The particular salt produced depends on which acid and base are combined.