IDDSI Level 0
Thin
Flows like water.
What it is
Fast-flowing liquids that flow freely through a straw, cup, or syringe. No thickening at all.
What it looks like
Water, coffee, tea, juice, broth — anything that splashes.
The official test
video: Level 0 testing method
10 mL syringe flow test: 1 mL or less remains after 10 seconds.
Run the guided syringe testFoods that typically fit
- Water
- Black coffee & tea
- Clear juices
- Broth
- Most oral nutrition shakes (check the label)
Products can vary by batch. Always verify with the IDDSI tests before serving.How to test →
Common mistakes
- Assuming all supplement shakes are thin — many test at Level 1 or 2.
- Ice cream and gelatin melt to thin in the mouth — they count as Level 0 if thin liquids are restricted.