I have been doing some drawing in parks, on pavements and at the harbour. Using this lovely ink - Encre Sennelier: "shellac based ink with a transparent satin finish". bought on the Graphotism website, which i really recommend for any kind of art material.
They have lovely color-wheels to help you select color. I use a squeezy pen - a caricature artist at a wedding gave this pen to me after I enquired about his pen - kind chap. It has a long pointed brush which fills with more ink when you squeeze the pen.
The cartridge is filled with black ink, but I dipped the end in the yellow ink, allowing the black to seep through a little.
