How to create a C++ decorator function without using virtual

#include<iostream>
using namespace std;

class Smoothy{
private:
    int price;
public:
    int getPrice(){
        return price;
    }
    virtual ~Smoothy() = default;
    virtual string description() = 0;
};

class BasicSmoothy: public Smoothy{
private:
    string nume;
public:
    BasicSmoothy(string n): nume(n){}
    string description(){
        return nume;
    }
};

class SmoothyDecorator:public Smoothy{
private:
    Smoothy *b;

public:
    SmoothyDecorator(Smoothy* bb){
      b = bb;
    }
    ~SmoothyDecorator(){
        delete b;
    }
    string description(){
        return b->description();
    }
};

class SmoothyWithCream:public SmoothyDecorator{
public:
    SmoothyWithCream(Smoothy *b):SmoothyDecorator(b){

    }
    string description(){

        return SmoothyDecorator::description() + " with Cream!";
    }
};

class SmoothyWithCinnamon:public SmoothyDecorator{
public:
    SmoothyWithCinnamon(Smoothy *b):SmoothyDecorator(b){

    }
    string description(){
        return SmoothyDecorator::description() + " with Cinnamon!";

    }
};

int main(){
     Smoothy* b = new SmoothyWithCinnamon(new BasicSmoothy("Kiwi"));
     cout<<b->description();

}