## Step 1: Define the symbolic representation of the problem
The problem involves three variables: 'chicken thighs', 'kale salads', and 'apple pies', which we can denote as $x_0$, $x_1$, and $x_2$ respectively.

## Step 2: Translate the objective function into symbolic notation
The objective function to minimize is $8x_0 + 8x_1 + 1x_2$.

## 3: List the constraints in symbolic notation
The constraints given are:
1. $19x_1 + 11x_2 \geq 33$ (At least 33 grams of carbohydrates must come from kale salads and apple pies)
2. $2x_0 + 19x_1 \geq 26$ (At least 26 grams of carbohydrates must come from chicken thighs plus kale salads)
3. $2x_0 + 11x_2 \geq 21$ (At least 21 grams of carbohydrates must come from chicken thighs plus apple pies)
4. $2x_0 + 19x_1 + 11x_2 \geq 21$ (At least 21 grams of carbohydrates must come from chicken thighs, kale salads, and apple pies)
5. $16x_0 + 2x_1 \geq 32$ (At least 32 milligrams of iron must come from chicken thighs plus kale salads)
6. $2x_1 + 6x_2 \geq 42$ (At least 42 milligrams of iron must come from kale salads and apple pies)
7. $16x_0 + 2x_1 + 6x_2 \geq 42$ (At least 42 milligrams of iron must come from chicken thighs, kale salads, and apple pies)
8. $6x_0 + 3x_2 \geq 45$ (At least 45 grams of fiber must come from chicken thighs plus apple pies)
9. $6x_0 + 14x_1 \geq 25$ (At least 25 grams of fiber must come from chicken thighs plus kale salads)
10. $14x_1 + 3x_2 \geq 46$ (At least 46 grams of fiber must come from kale salads plus apple pies)
11. $6x_0 + 14x_1 + 3x_2 \geq 46$ (At least 46 grams of fiber must come from chicken thighs, kale salads, and apple pies)
12. $x_0 - 7x_1 \geq 0$ (One times the number of chicken thighs, plus minus seven times the number of kale salads has to be at minimum zero)
13. $19x_1 + 11x_2 \leq 104$ (You can get up to 104 grams of carbohydrates from kale salads and apple pies)
14. $2x_0 + 11x_2 \leq 89$ (You must get no more than 89 grams of carbohydrates from chicken thighs plus apple pies)
15. $16x_0 + 6x_2 \leq 195$ (You must get no more than 195 milligrams of iron from chicken thighs plus apple pies)
16. $2x_1 + 6x_2 \leq 146$ (You can get up to 146 milligrams of iron from kale salads plus apple pies)
17. $6x_0 + 14x_1 \leq 194$ (You must get no more than 194 grams of fiber from chicken thighs plus kale salads)
18. $6x_0 + 14x_1 + 3x_2 \leq 128$ (At most 128 grams of fiber can come from chicken thighs, kale salads, and apple pies)

## 4: Define the symbolic variables and the problem
The symbolic variables are:
- $x_0$ for 'chicken thighs'
- $x_1$ for 'kale salads'
- $x_2$ for 'apple pies'

## 5: Write down the problem in a structured format
```json
{
    'sym_variables': [('x0', 'chicken thighs'), ('x1', 'kale salads'), ('x2', 'apple pies')],
    'objective_function': '8*x0 + 8*x1 + 1*x2',
    'constraints': [
        '19*x1 + 11*x2 >= 33',
        '2*x0 + 19*x1 >= 26',
        '2*x0 + 11*x2 >= 21',
        '2*x0 + 19*x1 + 11*x2 >= 21',
        '16*x0 + 2*x1 >= 32',
        '2*x1 + 6*x2 >= 42',
        '16*x0 + 2*x1 + 6*x2 >= 42',
        '6*x0 + 3*x2 >= 45',
        '6*x0 + 14*x1 >= 25',
        '14*x1 + 3*x2 >= 46',
        '6*x0 + 14*x1 + 3*x2 >= 46',
        'x0 - 7*x1 >= 0',
        '19*x1 + 11*x2 <= 104',
        '2*x0 + 11*x2 <= 89',
        '16*x0 + 6*x2 <= 195',
        '2*x1 + 6*x2 <= 146',
        '6*x0 + 14*x1 <= 194',
        '6*x0 + 14*x1 + 3*x2 <= 128'
    ]
}
```

## 6: Implement the problem using Gurobi
```python
import gurobi

# Create a new model
model = gurobi.Model()

# Define the variables
x0 = model.addVar(name="chicken thighs", lb=0)
x1 = model.addVar(name="kale salads", lb=0)
x2 = model.addVar(name="apple pies", lb=0)

# Set the objective function
model.setObjective(8*x0 + 8*x1 + x2, gurobi.GRB.MINIMIZE)

# Add constraints
model.addConstr(19*x1 + 11*x2 >= 33)
model.addConstr(2*x0 + 19*x1 >= 26)
model.addConstr(2*x0 + 11*x2 >= 21)
model.addConstr(2*x0 + 19*x1 + 11*x2 >= 21)
model.addConstr(16*x0 + 2*x1 >= 32)
model.addConstr(2*x1 + 6*x2 >= 42)
model.addConstr(16*x0 + 2*x1 + 6*x2 >= 42)
model.addConstr(6*x0 + 3*x2 >= 45)
model.addConstr(6*x0 + 14*x1 >= 25)
model.addConstr(14*x1 + 3*x2 >= 46)
model.addConstr(6*x0 + 14*x1 + 3*x2 >= 46)
model.addConstr(x0 - 7*x1 >= 0)
model.addConstr(19*x1 + 11*x2 <= 104)
model.addConstr(2*x0 + 11*x2 <= 89)
model.addConstr(16*x0 + 6*x2 <= 195)
model.addConstr(2*x1 + 6*x2 <= 146)
model.addConstr(6*x0 + 14*x1 <= 194)
model.addConstr(6*x0 + 14*x1 + 3*x2 <= 128)

# Optimize the model
model.optimize()

# Print the solution
if model.status == gurobi.GRB.OPTIMAL:
    print("Objective: ", model.objVal)
    print("Chicken thighs: ", x0.x)
    print("Kale salads: ", x1.x)
    print("Apple pies: ", x2.x)
else:
    print("The model is infeasible")
```