check this one:

https://www.odi.org/sites/odi.org.uk/files/odi-assets/publications-opinion-files/3683.pdf

Dear Carmel

Could you clarify what you mean by 'pulses in recipes'?

It is the first time I read about such a term

Dear Camela,

I'm not so sure about the meaning of recipes in this context, but, if You are looking for a methodology about operations research problem structure (including linear programming). There is a basic structure wrote by Hillier & Lieberman.

Chapter 2 focuses on six stages.

Chapter 2: Overview of the Operations Research Modeling Approach.

2.1 Defining the Problem and Gathering Data

2.2 Formulating a Mathematical Model

2.3 Deriving Solutions from the Model

2.4 Testing the Model 16

2.5 Preparing to Apply the Model

2.6 Implementation

If the problem under consideration is supposed to belong to the class of linear programming problems, then it's necessary to check if it satisfies the 4 assumptions of LP modelling: proportionality, additivity, divisibility and certainty.