Where can I find Meyer lemons? How can I substitute a regular lemon

We can always get Meyer lemons here, but I've purposely used regular ones. I pretty much do what hla and wssmom suggest, but in the most casual, almost sloppy, of ways. I just get a little of the pith out but don't work too hard. After all, it's "Lazy" Mary's Tart. And, by the way, you are in for a treat! This one is truly a genius recipe.

I have used a regular lemon in place of a Meyer lemon when they are out of season for this recipe. I zested the lemon and removed the pith (as HLA suggests). I also added a whole clementine.

Meyer lemons tend to show up late fall to early winter at the grocery stores where I live. I'd be worried about bitterness if you subbed a regular lemon - regular lemons have a much thicker pith than meyer lemons. If need be I'd zest the regular lemon, then remove the skin before blending.