Firmness was determined by an A/LKB-F probe in the compression mode with the following mode settings: pretest, test, and posttest speeds were 1.0, 0.8, and 10.0 mm/s; the force was 1000 g; the trigger type was auto-5 g; the broken sensitivity was 10.0 g (Approved Method 66-50 (AACC, 2000)).