Cost information for the following is not included. Normally this is because the quantity or ingredient is unknown
1 medium-size Yukon Gold potato, scrubbed
12 cups gently packed spinach (about 10 oz), tough stems trimmed and discarded
1/2 jalapeño pepper, minced
Freshly ground black pepper to taste
1 tbsp, (freshly squeezed), lemon juice, or more to taste