‘Twas a time when Charlotte vegeheads bemoaned the dearth of vegan options in the Queen City. Then came Fern. Then Luna’s and Bean. Now, Chef Clark Barlow at Heirloom Restaurant will prepare a vegan meal to end all vegan meals: Six courses of yumminess made from locally sourced ingredients including whole wheat bucatini, fried mushroom “chicken,” cashew cheese, chocolate cake and wine.