mushy peas with oven baked chips

Name: mushy peas with oven baked chips
Ingredients: For the chips; 2 medium sized white potatoes, cut in to even sized slices; 2 teaspoons extra virgin olive oil; salt, pepper, dried oregano to season (rosemary and crushed chili also works well); For the mushy peas; 1 teaspoon olive oil; 1 garlic clove, minced or chopped; 1 yellow onion, chopped; 4 celery stalks, finely chopped; 2 cups frozen spring peas; 1/4 cup good vegetable stock; 2 tablespoons chopped, fresh mint; salt, pepper, dash of malt vinegar to taste (you could use lemon juice instead)