I’d recommend cured meats like smoked sausage or jerky along with crackers. I believe you can do cous cous without boiling the water too but I could be wrong there.
There are also some dehydrated backpacking meals that don’t require boiling the water. Usually they are the breakfast ones with powdered milk and granola and dehydrated fruits - they’re delicious and some of my favorite backpacking food!!
Is this any different than EPA rated MPG listed on vehicles? Obviously their quoted range is an absolute best case scenario. Still fun to meme on the cyber truck though.