While researching a topic, a student has taken the following notes:
- Receptors in the human tongue can detect sweetness, saltiness, sourness, bitterness, and umami.
- Umami is a rich, savory flavor.
- Umami is triggered by the compounds in a variety of foods, including beef and caramelized onions.
- Participants in a research study tasted samples of winged kelp (a type of brown seaweed) collected from Stykkishólmur, Iceland.
- On average, they rated its umami intensity as moderate.