Taco Ed's Mexican Cuisine was a scam that appeared in "Honor Thy Ed." The intent was for the Eds to sell tacos to the kids. The tacos consisted of paper plates for shells, grass/dandelions for the filling, grated orange crayon for the cheese, and Eddy's Brother's Armenian Secret Hot Sauce to top it all off.
The scam was setting up good until Edd tried to humor Ed's eating of the grated orange crayon. Edd then facetiously suggests that a blue crayon must taste like a blueberry pie. Ed took the bait, and indeed confirmed that it tasted like a blueberry pie. Edd then ate a yellow crayon, wondering if it was banana flavored.
Upon realizing that it had a bad taste, Edd quickly needed something to drink and grabbed the first liquid he found, which unknowingly, was the hot sauce. Initially, it removed the bad taste, and Ed even ate a taco with it. Eddy, astonished the hot sauce wasn't hot, took a lick to test it. Moments later, the hot sauce finally kicked in, and all the Eds had a severe reaction to it. Edd reacted by having smoke blow out his ears and hat like a steam whistle, while Ed's head burned up (offscreen) and resembled a used match. Finally, Eddy's hair, in a cartoon like manner, started burning like a fuse and exploded, taking the stand with it. The Eds immediately abandoned the scam in order to find something to alleviate the spice.