Funny. I've never made pea soup using stock. I usually dump the ham bones, peas, water, and all the ingredients into the soup pot and let it simmer all day. You only have to take out the bones and maybe cut the ham into smaller pieces, skim off the fat, and the soup is made and ready to eat. If I put left over soup in the fridge, it solidifies into a a lump and you have to add a bit of water and heat it up to liquify it again. This is normal.