diff --git a/src/FileHandler.py b/src/FileHandler.py
new file mode 100644
index 0000000..68e5e24
--- /dev/null
+++ b/src/FileHandler.py
@@ -0,0 +1,55 @@
+import os
+import json
+
+from dotenv import load_dotenv
+
+load_dotenv()
+
+file_path = os.getenv("file_path")
+
+def read_json() -> dict:
+    try:
+        with open("./src/json/ingredients.json", "rt") as file:
+            return json.load(file)
+    except:
+        print("Could not find or read file.")
+
+def get_selected_meals(meals: dict) -> dict:
+    meal_json = read_json()
+    selected_meals = {}
+    for meal in meals:
+        if meal in meal_json:
+            selected_meals[meal] = meal_json[meal]
+    return selected_meals
+
+def combine_ingredients(meals: dict) -> dict:
+    combined_ingredients = {}
+
+    for meal, ingredients in meals.items():
+        for ingredient, detail in ingredients.items():
+            if ingredient in combined_ingredients:
+                combined_ingredients[ingredient]['quantity'] += detail['quantity']
+            else:
+                combined_ingredients[ingredient] = detail
+    return combined_ingredients
+
+def write_checklist(data: dict) -> None:
+    if os.path.exists(file_path):
+        os.remove(file_path)
+
+    try:
+        with open(file_path, 'w') as checklist:
+            for ingredient, details in data.items():
+                s = ingredient + " - " + str(details['quantity'])
+                if details['units'] != None:
+                    s += " " + details['units']
+                checklist.write(f"- [ ] {s}\n")
+    except Exception as e:
+        print(f"Unable to write data to file. {e}")
+
+
+if __name__ == "__main__":
+    meals = read_json()
+    if meals:
+        combined_ingredients = combine_ingredients(meals)
+        write_checklist(combined_ingredients)
\ No newline at end of file