Coffee too sour, bitter, weak or harsh? Pick what is wrong and how you brew. You get the fixes in the order to try them.
What is wrong?
How do you brew?
Change one thing per brew, taste, then change the next. Two changes at once and you will not know which one worked.
Pick what is wrong and how you brew.
Do this next
Get the numbers right first. Weigh your coffee and water - the Brew Ratio calculator gives grams, temperature and a pour timer. Open Brew Ratio + Timer
Check the beans are fresh. Very fresh beans taste sharp; old beans taste flat, whatever you change. Is My Coffee Fresh?
Learn it properly, free. 13 free barista lessons on espresso, milk and dialling in. Free Barista Course