The other day my Dad and I were grocery shopping. We were in the fruit and veg isle when of all things he decided to buy Seville oranges. For some reason he did not know that Seville oranges are extremely bitter and only suitable for making marmalade. We got home and he had on for lunch, only to find they were inedible. The next thing I know, he's asking me to make marmalade. I don't think that he realised that in that simple request that took all of three seconds to ask, he was in fact sculpting out my entire day. Making jam and marmalade is a time consuming process and needs a lot of patience, so make sure you have time on your hands and start early. The times I have provided are just a guideline because when it comes to making marmalade, the time it takes to set is highly variable. Based on the brands I used a tbsp serving should amount to about 40 calories.