Other causes of curling tomato plant leaves are heat stress, and watering issues (both under-watering and over-watering). A tomato nitrogen deficiency and transplant shock at planting time can also lead to this problem. Note that curling of leaves downward can be caused by exposure to herbicides...
The edges of pepperoni tend to curl up and crisp when exposed to the high heat of a pizza oven, creating a characteristic cupped appearance. 3 Is it necessary to peel chorizo before cooking? Some types of cured chorizo have a tough outer casing that should be removed before eating; however...