This recipe is a hard one for me to share exact measurements. It really depends on the amount of cooked chicken you have and how much mayo you like.
ingredients:
cooked and chopped chicken
3 celery sticks chopped
1/2 cup of mayo (more or less depending on how much chicken you have)
2 tbs of seed or dijon mustard
cornichons - I like A LOT - chop them up
salt and pepper to taste
directions:
After everything is chopped, mix it all together. Sometimes I like to add some cornichon juice. A tablespoon or so. Remember that the amount everything you put is personal preference, Start off small and you can always add more if it looks too dry. I like to add in a lot of celery and cornichons because I like the crunch!