Today's strip should really infuriate trumanf as it's performed in the key of CHOMP-CHEW-GLUT-SHLOOOOOOK-SHHLLLLLUUUMM
Panel 1: Elly, Mike and Lizzie are at a fast food restuarant in the middle of the day; as we see them surrounded by Pattersnarfing mutants and look at the not-at-all updated prices for menu choices that point to Lynn's issues with food, Mike cheerfully asks Elly why her burgers don't taste like the ones they serve here instead of asking why Lizzie doesn't have a bib given that she eats messily even by Patterson standards.
Panel 2: As she opens up her burger, martyred Elly says that she doesn't know and guesses she never hit on the right blend of sawdust.
Summary: Given that the Elly of old was a fairly poor cook who thought Cheapie Weenie Casserole was gourmet food and would become the same woman who served greaseburgers with extra bacon, stomach-blocking stews and tuna cardiac-arrest casserole, this is a standard example of hypocritcal humor. It's also why John thought that canned beans were a step up in the meal department.