Add potato salad recipe, remove egg from lasagna ingredients

.gitignore

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+.DS_Store*
+.DS_Store
+
+.Rproj.user
+.Rproj

mains/vegetarian-lasagna.md

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 - **9-12** no-boil lasagna noodles
 - **1** large jar (about 24 oz) of marinara sauce
 - **15 oz** ricotta cheese
-- **1** egg
 - **1/2 cup** grated Parmesan cheese
 - **2 cups** shredded mozzarella cheese
 - **1 lb** fresh spinach, rinsed and chopped (or use frozen spinach, thawed and drained)

salads/potatosalad.md

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+# Grandma's potato salad
+
+### ingredients
+- potatoes
+- onion
+- broth
+- chives
+- salt
+- pepper
+- oil
+- vinegar
+
+### steps
+- cook potatoes without peeling
+- peel when still piping hot
+- slice, 0.7mm thick
+- add chopped onions
+- pour hot broth on top
+- 

soups/ribolita.md

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+# Ribolita soup recipe
+
+
+## Ingredients
+
+
+- **2 tablespoons** olive oil or unsalted butter
+- **1** medium onion, diced
+- **2** garlic cloves, minced
+- **1 teaspoon** fresh thyme leaves (or ½ teaspoon dried thyme)
+- **4 cups** (about 950ml) vegetable broth
+- **1 can** cannelini beans
+- **Salt and black pepper** to taste
+- **Fresh parsley** chopped, for garnish
+- **tuscan cale**
+- **canned tomatoes** 
+- **leek** 
+- **parmesan cheese** 
+
+## Instructions
+
+- make ribolita from these
+- ...
+- enjoy!