Hrm. Well, if my calculations are correct, and assuming sauce has the same density as water, then my method would have resulted in each bottle being about 6.1 ml light. Although since the majority of the solids that went into the sauce themselves do float, and therefore have a lower density than water, I assume that difference would be much less. I'll measure out 5 actual fluid ounces this evening and see how much that fills up a bottle. In any event, I'll be sure to do it right this year. I guess I should have paid more attention in home ec class.