I made it for Ethan when he was a baby and now for Caleb.
I buy the packages of organic veggies at Whole Foods...steam them until they are nice and tender....blend them or use a food processor(you can make them however mushy you want them, even by adding water to them)...and freeze them in ice cube trays....i usually give Caleb a yellow/orange (sweeter) veggie and a green veggie mixed together.
Warning since you have been giving jarred food to Emma she may not care for the texture so I would start really mushy.
When I get out and defrost a cube of veggies, I add some flax seed oil and lots and lots of salt.
Blessings,
Missa