Echoing some of the results of your taste-test. Amaral’s Portuguese muffins were in my supermarket on my recent run, so I bought a package. My husband and I didn’t like them as much as other bolos levedos we’ve had, so I won’t be buying them again. I have a hunch these ones are best bought fresh at the bakery and enjoyed soon after baking (not unlike the fluffy Italian white bread loaves of my childhood).
Also take a look at these two muffins from the same package. Quite different in size and color.
