Table 1.
Results of the ISO 4120:2004 sensory analysis using triangle testing for differentiation of espresso prepared using different brewing temperatures.
| Brewing Temperature | No. of Assessors | No. of Correct Responses | Significance 1 | LCI/UCI 2 |
|---|---|---|---|---|
| 80 °C vs. 128 °C | 24 | 15 | yes (α = 0.01) | 0.19/0.68 |
| 80 °C vs. 93 °C | 24 | 11 | no (α = 0.20) | – 3 |
1 According to ISO 4120:2004 [23]. For the non-significant trial, the minimum number of correct answers to conclude that a perceptible difference exists (α = 0.05) would have been 13/24. 2 Lower and upper 95% confidence intervals (LCI/UCI) for the triangle tests calculated according to ISO 4120:2004 [23]. The limits can be interpreted as percentage of population that can perceive a difference between the samples [26]. 3 Not calculated for non-significant trial.