diff --git a/fruehstueck_inventar.py b/fruehstueck_inventar.py
new file mode 100644
index 0000000..48b634d
--- /dev/null
+++ b/fruehstueck_inventar.py
@@ -0,0 +1,78 @@
+import csv
+import json
+import os
+import pprint
+import re
+import sys
+from collections import defaultdict
+from datetime import timedelta
+from pathlib import Path
+
+from tqdm import tqdm
+
+from config import *
+from lib import read_recipes
+
+
+# TODO read from csv
+wanted_servings = {
+    "Aufstrich Zwiebel & Kümmel": 100,
+    "Cashew-Streichkäse": 100,
+    "GPN-Tomatenbutter": 100,
+    "Granatapfelcreme": 100,
+    "Gulaschmarmelade": 100,
+    "Hummus": 100,
+    "Matelade Apfel": 100,
+    "Mungobohnenhummus mit Jalapenos und Zatar": 100,
+    "Rauchige Schwarze Bohnencreme": 100,
+}
+
+
+# XXX move to lib
+def grams(ingredient):
+    conversion = None
+    for c in ingredient["conversions"]:
+        if c["unit"] in ["g / Gramm", "g"]:
+            conversion = c
+    if conversion:
+        return conversion.get("amount")
+
+
+def main():
+
+    recipes = read_recipes(keyword="Frühstück")
+
+    inventory = {}
+
+    for recipe in recipes:
+        scale_factor = wanted_servings[recipe["name"]] / recipe["servings"]
+        r_name = recipe["name"]
+        for step in recipe["steps"]:
+            for ingredient in step["ingredients"]:
+                if not ingredient.get("food"):
+                    raise ValueError("No food in ingredient")
+                    continue
+                i_grams = scale_factor * (grams(ingredient) or 0)
+                i_name = ingredient["food"]["name"]
+                i_description = ingredient["food"][
+                    "description"
+                ]  # XXX probably not what i wanted
+
+                inventory.setdefault(i_name, []).append((i_grams, r_name))
+
+    print("!!! alert")
+    print("automatisch erstellt, nicht editieren...")
+    print("!!!")
+
+    for ingredient, entries in inventory.items():
+        total = sum(amount for amount, _ in entries)
+
+        print(f"## {ingredient}")
+
+        print(f"- **{total:.1f}g** **Total**")
+        for i_grams, r_name in entries:
+            print(f"- {i_grams:.1f}g {r_name}")
+
+
+if __name__ == "__main__":
+    main()