Crazy jack fennel seeds 50g crazy jack organic fennel seeds come from the fennel herb and are most commonly used as a sweet cooking spice these seeds are similar in appearence to cumin seeds but when added to foods have a sweeter flavourfennel seeds are often used in indian and south east asian cusine to add extra spice to dishes they are a good source of fibre and are thought to have anti inflammatory properties from anethole a nutrient compound responsible for the sweet flavour of fen