Marmalade is like jam made with citrus fruit and includes finely minced peels. Citrus fruit has several layers. The bright color portion of the peel is called the zest. The bitter white part of the peel is the pith. Pulp is the sections most of us are familiar with when we peel and orange and eat it. Juice is just that, juice. Most marmalade is made from a combination of zest, pulp and juice.
Citrus fruit is amazing! With some added organic cane sugar and water, the fruit itself produced enough pectin to gel for marmalade.