I'm pretty new to the homebrewing world, and so far I've done three 5 gallon batches. The first was a prebuilt kit (Pale Ale), the second was a recipe I concocted (IPA), and the third was a recipe I found online somewhere. (Belgian golden)
Each of these three batches have shared a very distinct off flavor. I'd characterize it by being overly fruity, as well as pretty bitter. I've made sure to have good sanitation, even going as far as using water purification tablets in the last batch.
For all three batches, I fermented for three weeks, and carbonated for two. OG/FG have been pretty spot on as well. I've also maintained a constant temp during fermentation (~72 Fahrenheit). The first two used a single packet of US-05, and the most recent used a vial of White Labs WLP570. 5 ounces of corn sugar was used to prime each batch before bottling.
Is there anything overtly wrong I could be doing that would produce similar off flavors in all of these batches? Please let me know if I can provide any more details on the recipes or processes.