I would enjoy trying your coffee, I make it strong at home, like 5 tsps of ground beans if brewing in a pan or 4tsps instant.
Ro, maybe you should try chifir for fun ( a Gulag/prison strong type of tea )
It is considered a strong stimulant.
-Fill a full mug with hot water.
-Drop 2-2,5 matchboxes of quality small leaf black tea into the mug
-No stirring
-Cover the mug with a saucer or a small plate.
-Let it brew for 8-10 min. (The leaves must settle to the bottom.)
-Take a second mug and gently start pouring the content from mug to another.Repeat the process several times.
-Filter the leaves through a strainer
-Drink SLOWLY
-Don't add any sugar or eat sweets.
-Make sure you drink the beverage on an empty stomach.