Oh, I just thought up another one:

22. Real french toast (what the French call "pain perdu") shall only be made with STALE bread that has been air-dried for no less than 8 hours. And the finished product shall be consumed only with a sprinkling of sugar and unsalted butter.
23. NEVER, under any circumstances, shall salted butter EVER be allowed in my kitchen. Always use unsalted.
24. Sandwiches shall ALWAYS be built in the following order (soft spread sandwiches, such as tuna salad or PB/J excepted): bread, moisture barrier spread, meat, veg (repeat as desired), dijon mustard, cheese, moisture barrier spread, bread. Under no circumstances shall two consecutive layers of meat be allowed on a sandwich. However, multiple layers of meat alternating with veg is permissible. Exceptions: tomatoes. Always either on top or the bottom, before the moisture barrier spread. In the case of a soft spread sandwich: soft bread, spread, veg (optional), moisture barrier spread, soft bread.
25. A sandwich's height, shall never under any circumstances exceed one and a half inches or 4 centimeters at the thickest point and shall feature a good balance of ingredients. Meat shall compose of no more than 35% of the height of the sandwich.
26. Margerine is henceforth permanently banned from my kitchen.