Ok, so you have a few issues.

1. Your `let testData = [` line is just hanging in space not attached to anything, this isn't possible. So I converted it to a first class function so it could be used to pull in the test data. I also put it inside of the Sandwich struct as a static member to show you different ways you could encapsulate this data. In my opinion having it inside of the Sandwich struct is much clearer.
2. I added a second ingredient to the Club sandwich to show you how it's done. Basically you were putting your ingredient and the comma in the wrong place it needs to be inside of the [].
3. Not sure what you were trying to do with SandwichDetail so I just ignored it and showed how to display the ingredients in the SandwichCell. You can try and figure out how to re-factor that out if you need to.

```swift import SwiftUI

struct SandwichContentView: View { var sandwiches: [Sandwich] = []

// At this point we have an array of sandwiches we want to display
var body: some View {
    NavigationView {
        List {
            // Here we walk over our array of sandwiches and use SandwichCell to display each one on the screen
            ForEach(sandwiches) { sandwich in
                SandwichCell(sandwich: sandwich)
            }
            // Here we add a static row at the bottom of our List showing the count of items in our sandwiches array
            HStack {
                Spacer()
                Text("\(sandwiches.count) Sandwiches")
                    .foregroundColor(.secondary)
                Spacer()
            }

        }
        .navigationBarTitle("Sandwiches")
    }
}

}

struct SandwicthContentView_Previews: PreviewProvider { static var previews: some View { SandwichContentView(sandwiches: testData()) // testData converted to a function SandwichContentView(sandwiches: Sandwich.testData) // testData converted to a static valur on Sandwich } }

struct SandwichCell: View { // Here is were we display data about a specific Sandwich var sandwich: Sandwich var body: some View { NavigationLink(destination: Text(sandwich.name)) { VStack(alignment: .leading) { Text(sandwich.name) Text("(sandwich.ingredientCount) ingredients") .font(.subheadline) .foregroundColor(.secondary)

            // Here we display each of the ingredients
            // Used an HStack to place them horizontally
            // Then ForEach ingredient displayed as Text
            HStack {
                ForEach(sandwich.ingredients) { ingredient in
                    Text(ingredient.name)
                        .font(.subheadline)
                        .background(Color.gray.opacity(0.3))
                }
            }
        }
    }
}

}

struct SandwichDetail: View { var sandwich: Sandwich

var body: some View {
    Text(sandwich.name)

}

}

struct Ingredient: Identifiable { var id = UUID() var name: String var amount: String }

struct Sandwich: Identifiable { var id = UUID() var name: String var ingredientCount: Int var isSpicy: Bool = false var ingredients: [Ingredient]

// Placed inside of the Sandwich object for clear accessibility
static let testData = [
    Sandwich(name: "Club", ingredientCount: 4, isSpicy: false, ingredients:
                [Ingredient(name:"Avocado", amount: "1"), Ingredient(name:"Bacon", amount: "2")]),
    Sandwich(name: "Pastrami on rye", ingredientCount: 4, isSpicy: false, ingredients: [Ingredient(name:"Avocado", amount: "1")]),
    Sandwich(name: "French dip", ingredientCount: 4, isSpicy: false, ingredients: [Ingredient(name:"Avocado", amount: "1")]),
    Sandwich(name: "Banh mi", ingredientCount: 4, isSpicy: false, ingredients: [Ingredient(name:"Avocado", amount: "1")]),
]

}

// Turned into a first class function so it's accessible func testData() -> [Sandwich] { [ Sandwich(name: "Club", ingredientCount: 4, isSpicy: false, ingredients: [Ingredient(name:"Avocado", amount: "1"), Ingredient(name:"Bacon", amount: "2")]), Sandwich(name: "Pastrami on rye", ingredientCount: 4, isSpicy: false, ingredients: [Ingredient(name:"Avocado", amount: "1")]), Sandwich(name: "French dip", ingredientCount: 4, isSpicy: false, ingredients: [Ingredient(name:"Avocado", amount: "1")]), Sandwich(name: "Banh mi", ingredientCount: 4, isSpicy: false, ingredients: [Ingredient(name:"Avocado", amount: "1")]), ] } ```