A resident/patient is assigned a fluid type (honey thick, nectar thick, etc.) via the Fluid field in their Personal Information section on their profile (screenshot below). For specific instructions, see Assigning Diet Order (Diet Type, Texture Type, Fluid Type) to Person.
When a resident/patient is assigned a particular fluid type (honey thick, nectar thick, etc.), then the system will serve the fluid recipe substitute of the fluid type that has been extended for a recipe. See How a Fluid Recipe is Served for more information.
Note: To implement a fluid restriction for a resident/patient, see the following article: Implementing a Fluid Restriction for a Resident/Patient.