String interpolation on the value of a Map interface

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1 
anotherValue := "aValue"
Banana := map[string]map[string]interface{}{
		"amap": map[string]interface{}{
			"aKey": "aValue",
			"anotherKey": fmt.Printf("another Value %s", anotherValue)
		},
	}

I am trying to do a string interpolation with a variable inside a map, for a “value”. Refer value of “anotherKey” from above. If you see I am trying to do fmt.Printf() but that doesnt work. How can I solve this problem of string interpolation/formatting for a “key/value” inside a map?
I tried few different options but nothing seem to work.

2

Is this what you’re trying to do? https://play.golang.org/p/ryx6AKDjVXS

3

Awesome, thank you. I am a noob in golang. Just understood the difference between Printf and Sprintf. The latter returns one string value, convenient to use inside the map. Thanks gain…you saved my day literally.