Spoon pressure test:
- Use the side of the spoon to cut or cut food into small pieces
- Use your thumb to press the food with the bottom of the spoon (the food sample should be about the same size as your fingernail, i.e. 1.5 x 1.5 cm) until your thumbnail turns white. The food will be flattened and changed in shape. Food will not return to its original shape after the spoon is removed
 
References:
The International Dysphagia Diet Standardization Initiative (IDDSI)
https://iddsi.org/