Answer: Hot Rocks Method, Freezing Method
Step-by-step explanation:
Hot Rocks Method:
In this method, large rocks were heated in a fire until they became red hot. The hot rocks were then carefully transferred into a container filled with sap, usually a hollowed-out log or a wooden vessel. The heat from the rocks would cause the sap to boil and evaporate, reducing its volume and increasing its sugar concentration. More sap would be added to the container as the liquid evaporated, gradually concentrating the sap into syrup.
Freezing Method:
The freezing method took advantage of the fact that water freezes at a higher temperature than the sugars in maple sap. During cold winter nights, when the temperature dropped below freezing, maple sap would be collected and poured into shallow containers or troughs. These containers would be left outdoors, exposed to the cold temperatures