How much

[Rabbit91476]

How many pounds of habenero to fill 1/2 gallon wide mouth jar with mash.

 

[Genetikx]

I had a gallon ferment that had 6 pounds total of peppers/veggies...so I'd have to think you're looking at around 3 pounds

 

[Mr.CtChilihead]

I shoot for 800 grams per quart as far as ferments go, I dice not process but don't think that would matter much..Seems to leave almost the perfect head space, except for the most volatile ferments.  
 
So to answer your question 1600 grams..

 

[SmokenFire]

They're both right Rabbit. 

 

[salsalady]

"..a pint's a pound, the world around..."
 
... but not quite when looking at chopped produce in a jar with liquid.   ^^^These guys answered the question spot on,  This might give you a bit more information for future questions. 
 
Have Fun!!!
SL