The following text is for questions 1 to 4.

    Let me tell you how to make bandrek. Bandrek is traditional drink from West Java. First of all,  prepare the ingredients. We need one hundred grams of rubbed ginger, two hundred grams of finely ground palm sugar, five centimeters of cinnamon, a half teaspoon of salt, a teaspoon of cloves, two pandan leaves, and five hundred milliliters of water.

    Here are the steps. First, prepare a pan and then add all the ingredients. After that, boil until you can smell the fragrance of the stew and lift. Next, prepare a serving glass and pour it into the glass by filtering it so that the pulp from the stew is not carried over. Bandrek is ready to enjoy. Serve this warm drink with your favorite snacks. You can make this bandrek in the morning or at night as you want.

"After that, boil until you can smell the fragrance of the stew and lift." (Paragraph 2)

What is the closest meaning of 'boil'?