How do I convert from a user input string into <string>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace House_Goods
{
    class Product : Food, Cleaner
    {
        public string food { get; set; }
        public string cleaner { get; set; }

        public string foodRemover { get; set; }
        public string cleanerRemover { get; set; }
        
        public class Food<t>
        {
            public T food { get; set; }
            public T doFood(T f)
            {
                return f;
                

            }
        }
        public class Cleaner<t>
        {
            public T cleaner { get; set; }
            public T doCleaner(T c)
            {
                return c;

            }
        }
        List<food<string>> foodstring = new List<food<string>>();
        List<food<int>> foodint = new List<food<int>>();
        List<cleaner<string>> cleanstring = new List<cleaner<string>>();
        List<cleaner<int>> cleanint = new List<cleaner<int>>();
        public void addFood() 
        {
            
            Console.WriteLine("Food:");
           
            
            Food<string> food1 = new Food<string>();
              
            Console.Write(food1.doFood("Pizza"));
            foodstring.Add(food1);
            
            Food<int> food1index = new Food<int>();
            Console.Write(food1index.doFood(1));
            
            Console.WriteLine();
            Food<string> food2 = new Food<string>();
            Console.Write(food2.doFood("Pasta"));
          
            Food<int> food2index = new Food<int>();
            Console.Write(food2index.doFood(2));
            
            Console.WriteLine();
            Food<string> food3 = new Food<string>();
            Console.Write(food3.doFood("Sushi"));
           
            Food<int> food3index = new Food<int>();
            Console.Write(food3index.doFood(3));
            
            Console.WriteLine();
            Console.WriteLine("======================");
        }
        public void removeFood()
        {
            
            Console.WriteLine("Enter food you want to remove");
            foodRemover = Console.ReadLine();
            if(foodstring.Contains(foodRemover))
            {
                foodstring.Remove(foodRemover);
            }
            else
            {
                Console.WriteLine("Food not found");
            }


        }
        public void addCleaner()
        {
            Console.WriteLine("Cleaners:");
            Cleaner<string> cleaner1 = new Cleaner<string>();
            Console.Write(cleaner1.doCleaner("Baking soda"));
            
            Cleaner<int> cleanerindex1 = new Cleaner<int>();
            Console.Write(cleanerindex1.doCleaner(1));
            
            Console.WriteLine();
            Cleaner<string> cleaner2 = new Cleaner<string>();
            Console.Write(cleaner2.doCleaner("Mouth wash"));
           
            Cleaner<int> cleanerindex2 = new Cleaner<int>();
            Console.Write(cleanerindex2.doCleaner(2));
    
            Console.WriteLine();
            Cleaner<string> cleaner3 = new Cleaner<string>();
            Console.Write(cleaner3.doCleaner("Toothpaste"));
        
            Cleaner<int> cleanerindex3 = new Cleaner<int>();
            Console.Write(cleanerindex3.doCleaner(3));
          
            Console.WriteLine();
        }
        public void removeCleaner()
        {
            Console.WriteLine("Enter food name you want to remove");
            cleanerRemover = Console.ReadLine();
            if (cleanstring.Contains(cleanerRemover))
            {
                cleanstring.Remove(cleanerRemover);
            }
            else
            {
                Console.WriteLine("Cleaner not found");
            }
        }
    }
}