UK · Coffee & café
How much caffeine is in Costa Ristretto?
90 mgManufacturer listed · 1 shot
Costa’s current UK guide lists caffeine for one- and two-shot Ristretto servings.
Interactive serving
Adjust this serving
Choose a documented size, then change the quantity. The caffeine total and timeline update together.
Adjusted caffeine total90 mgBased on the selected documented serving.
Caffeine by serving
| Serving | Caffeine | Basis |
|---|---|---|
| 1 shot | 90 mg | Manufacturer listed |
| 2 shots | 180 mg | Manufacturer listed |
Source and provenance
- Source type
- Manufacturer
- Market
- UK
- Value basis
- Manufacturer listed
- Source reviewed
- 23 August 2026
- Source version/date
- 30 April 2026
Guide applies 30 April–26 August 2026.
Estimated caffeine remaining over time
These figures apply CaffCalc’s exponential model to the adjusted 90 mg starting value. They are calculations, not measurements of caffeine in a particular person.
| Hours elapsed | 3-hour half-life | 5-hour half-life | 7-hour half-life |
|---|---|---|---|
| 0 | 90 mg | 90 mg | 90 mg |
| 3 | 45 mg | 59.4 mg | 66.9 mg |
| 5 | 28.3 mg | 45 mg | 54.9 mg |
| 8 | 14.2 mg | 29.7 mg | 40.8 mg |
| 10 | 8.9 mg | 22.5 mg | 33.4 mg |
| 12 | 5.6 mg | 17.1 mg | 27.4 mg |
With the central five-hour model, the estimate falls below 25 mg after approximately 9.2 hours. The faster and slower columns show why one fixed clearance time should not be treated as a personal fact.