I have been thinking about a BLT for a couple weeks now. Today I made one. I could have eaten four, but I stopped at one. :)
And for me, it has to be old fashioned, soft, white bread. Toasted. And real, full fat mayonnaise. No extras like avocado or onion or whatever the heck else people like to put on their BLT's (which would then technically no longer be a BLT but a different sandwich altogether). And summer is really the only time it will be at it's best, because of the fresh tomatoes. And my tomatoes out in the garden are superb right now - as you can see. :)