Back in college, when I was in a severe state of starvation from my anorexia, I had to drown everything in mustard if I was going to eat it. For some reason, during that time mustard was the only thing strong enough that I could actually taste!
I found out later from my doctor that my anorexia had triggered a severe zinc deficiency, which suppresses your ability to taste things. No wonder food was always so nasty!
Mustard became the "fifth food group for me" - I think I consumed more mustard than actual food during that time.