Add all ingredients except the chia seeds to a medium sized sauce pan.
Using a masher, mash ingredients in pan until wet and combined.
Bring to a boil over medium heat. Reduce to a low heat and simmer, occasionally stirring, for 30 minutes.
Turn off heat and let cool for 10 minutes.
Add to blender and blend on high until smooth.
Stir in chia seeds.
Store in a sterile container. Let cool completely before storing in refrigerator. Stores for up to 2 months.
Place glass jar in a large pot and cover with water.
Bring to a boil and let boil for 10 minutes.
Turn off heat and carefully remove glass jar from the water and let air dry.