There are quite a few food creations that began as "accidents"... Take chocolate chip cookies, Wheaties, sandwiches, potato chips & ice cream cones. When I mistakenly came home from the grocery with sweetened evaporated milk instead of sweetened condensed milk I was upset. I rarely do something like this & I was rearing to make my hubby his favorite key lime pie . So when he suggested trying it anyway, using the evaporated milk instead, I decided to go ahead & do it. What I created wasn't a magnificent culinary creation but he enjoyed it nonetheless. According to hubby the texture was different, more cake-like, less creamy, & the flavor not as intense. But he enjoyed it!!!
Combine milk, egg yolks and lime juice. Blend until smooth. Pour filling into pie crust and bake at 350º for 35 minutes. Allow to stand 10 minutes before refrigerating. Just before serving, top with freshly whipped cream, or meringue, and garnish with lime slices.