What color are they?
One possible explanation for the bitter taste is improperly mixing your baking powder. Baking powder has a bitter taste and since biscuits cook so quickly I think you may be not mixing your baking powder enough. Mix all your dry ingredients together with a whisk to make sure they are evenly blended. That means the salt, flour, and baking powder. Then add your butter or shortening followed by your milk.
As far as the coloration goes you may need to be more specific. Are they grayish? Try a new baking sheet. Are they browning too quickly? Try lowering the temperature of your oven and increasing the cooking time. If they are anything other than those two colors then you have the strangest biscuits I've ever heard of.
What is the most likely explanation for the results in the graph?
The most likely explanation for the phenomenon of eliminating the impossible is that what remains, no matter how improbable, must be the truth.
Becuse they did
Given that these similarities and the differences occur in patterns of nested hierarchies, common descent is the more likely explanation.
The most likely explanation for the disappearance of Amelia Earhart is that her plane ran out of fuel and crashed into the ocean, leading to her and her navigator's loss at sea.
Defective voltage regulator.
Yes, polyester is generally bleach resistant, meaning it is less likely to be damaged or discolored when exposed to bleach compared to other fabrics.
The most likely explanation is that the solenoid itself has failed. The next most likely explanation is that the wiring to the ignition solenoid is not making proper contact or there's a bad ground connection. The least likely explanation is that the electronics that control the ignition solenoid (MPEM or whatever it's called on your model) is broken.
The voltage regulator is not working properly.
When you make biscuits you cut in the shortening, this process is what makes your biscuits light and airy. Once that is finished you add your liquids, stir minimally and then knead the dough to bring it all together. Using oil in the same mixture is more likely to produce a watery batter that can not be kneaded. It might produce an acceptable pancake batter but not a buscuit.
A shift in the orbit of the moon.
A shift in the orbit of the moon.