Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make a traditional bengali sweet (sandesh ) [title] Heat the milk in the pan until just before it boils, then turn off the heat. [step] Do not overcook the milk. [title] Add lemon juice (or citrus substitute) one tbsp at a time.

Ending1: [title] Stir the milk constantly while adding the lemon juice; the solid curds will separate from the liquid whey. [title] Place the cheesecloth in a strainer, and strain out the whey from the curds. Ending2: [step] Put this into a small saucepan using a high heat. Once the milk boils, bring it to boil again. Ending3: [step] Stir until all the juice is gone. [title] Unboil the salt and add 1/2 tsp. Ending4: [step] Do not over-drench the milk, as that may delay the cooking process and will cause the milk to shelf. [title] Add the sugar when the milk starts to foam.

Answer format: ending1/ending2/ending3/ending4