Sigh, you pill-dust-snorters did it to me, I did give the estradiol valerate in castor oil a taste test. (Yes, I know this isn't recommended, I dropped a few small drops on a fingertip, something like 10 μl which is a couple hundred micrograms.)
Anyway, sure enough, it's pretty unpleasant! Surprise!
I recommend using it as directed! (Which I can can be either subcutaneous or intramuscular injection, in my case my provider has me doing it subcutaneously, which is going well for me.)