Editing Food Addition

I often pre-journal my meals to save time.  So if I add 8 oz. of chicken to my journal . . . and then when I go to make it the chicken is actually 6 oz., is there any way to edit (increase/decrease) my initial entry?

What I'm finding is that I have to delete the first entry and then re-enter it with the correct weight.  It just seems there has to be a way to edit what I've already added?   

I've figured out how to easily add another serving to my journal (with the + button) and that's awesome, but can't figure out how (or if we even can) edit it.

Thanks so much for your help!  I've been using this website for around 4 weeks now and it is absolutely AWESOME!!!

Slightly faster is to click on it in the food log to bring that entry up - change to what you want, enter it, then go the the "wrong" entry and delete it. It does save looking through the tagged items for the same item.  Its also a good method for looking up foods you figured out a few days ago( like a complicated to enter item you picked up on sale (say frozen entrees) that you cannot bother to tag as you are not likely to eat it again for months till the next sale. Just change the date to the day you want added to the food log.  (experiment-sometimes depending on how you have opened the log( 7days searching for the item) it will automatically log to the last day looked up-so double check if you do not fuss with the date.)