See my friend i told you what did yours burn like? and also did your grind the onion skin in a ball mill? how fine was it?
Edit: can you also explain the effect you got with Sodium Nitrate?
Hi there this may help solve your dried onion problem as its best to get this catering grade, as some of the smaller and domestic products can in fact be more of a flavoured table salt than a true onion powder.
http://www.sausagema...ion_Powder.html
Also dried onions are available in catering sizes that could be milled.