Convert jam into chutney

Basically, a chutney is a kind of savoury jam. This is a very simplistic definition though. The main differences between jam and chutney are as follows:

• The preservation in jam is only by sugar. In chutney, vinegar and sugar are used together, so chutneys are not necessarily sweet.
• Jam is almost always made with fruit as the main ingredient. In chutney,fruit can be used, but so can vegetables. Also, chutneys tend to be a mix of more than one thing. For example, an apple chutney will have plenty of apples, but also swede and onion in it.
• Jams usually do not add other flavours to the fruit and sugar (pectin is for texture). Chutneys are usually flavoured with several spices, as well as chili peppers, onions and garlic.

In the Indian subcontinent, chutneys are served along with the meal in small amounts, as a condiment to add to the meal. They are usually eaten with the blander side/starter dishes like pakoras or samosas, rather than with the spicy and flavourful main dishes.

In the rest of the former British Empire, and particularly in England, it is eaten on bread, with butter or cheese, in a similar way to jam or pickle. Note that what the English call pickle is also a sort of savoury jam, not pickled cucumbers like in America.

It depends on what cuisine it is, though all chutneys and relishes are used as condiments/sides. In European cuisine, chutneys tend to be jammier and involve fruit of some kind. Relishes, like Elendil mentions, are usually made from pickled vegetables. As far as I have experienced, the chutney moniker is used when non traditional ingredients are involved Mango chutney, ginger mint chutney) whereas a relish is used when it is made from slightly more familiar ingredients like dill, cucumber etc (This is with regard to non Indian cuisine).

In Indian cuisine (which is where the chutney moniker originated from), chutneys are thinner and are almost always savory, even when they involve a fruit(eg., mango chutney will have chillies and salt in it). Indian chutneys involve herbs and chillies and sometimes even nuts/lentils. The texture difference comes from the fact that it is usually blended/pureed and usually water based. But then again, you would not have landed in this situation if the meal was Indian, as there is no concept of a relish there.