air popped pop corn
I think, as well, you would be too early out but after about 3 months I would allow myself about 1 cup popped from time to time. Air popped no salt or butter is the only way I like it so other than the carbs, it isn't too bad. Be sure to add those carbs and calories in and adjust your intake to match. Personally, I had it no more than 1 time per week but haven't had it in months now. Just drifted away again....
BEWARE THE POPCORN! LOL... ok not totally, but do know ahead of time that it is a total slider food. Think about spraying down a whole bag with water then mushing it down into as solid a mass as you could get it... wouldn't be much more than half a cup, would it? I can easily put down an entire bag if I let myself (and I have). SO, just be prepared to do as suggested and measure it out instead of sitting down and eating it 'til you're satisfied, 'cause next thing you know you'll be digging around the bottom of the bag hoping for just one more half-popped edible kernel.